CP CHEMISTRY

Unit 14ACIDS AND BASES (and a little Nuclear)

Date Agenda Homework

Mon 5/18 Notes - Reaction RatesPre-Lab – Concentration vs Reaction Rate Finish Prelab if needed

Tues 5/19 SCUBA surveys with guidance Quiz tomorrow

Wed 5/20 Quiz – Reaction RatesDemo – Concentration vs. Reaction Rate

Thurs 5/21 Notes – Acids and BasesLab - Introduce Indicators (Worksheet # 1 in Packet)

Fri 5/22 Notes – Naming Acids and Bases; Reactions with Acids Worksheet #2 (pg 5-7)

2.5 Hr DelayTues 5/26 Lab – Reactions with Acids (Worksheet #3 in packet) Worksheet # 4

2.5 Hr DelayWed 5/27

Go over HWNotes – pH Scale and Calculations Worksheet # 5

Thurs 5/28½ Day

Notes – Introduction to TitrationPrelab - Titration Worksheet # 6

Fri 5/30 Lab – Titration (Worksheet #7 in packet) Worksheet # 8Study for Test

Mon 6/1 Go over titration calculationsGo over Worksheet #8 Study for Test

Tues 6/2 Test – Acids and Bases Study Guide for Final Exam

Wed 6/3 Let’s learn about Nuclear Energy (Fission, Issues, Half Life)Worksheet #9

Work on Study GuideChapter Kahoot! Questions

Thurs 6/4 Work on Study Guides and Kahoot! Questions (due at 3:10) Work on Study GuideKahoot! Due at 3:10 today!

Fri 6/5 Kahoot! Review Work on Study Guide

Mon 6/8 Go over Study Guide for Final Work on Study Guide

Tues 6/9 Go over Study Guide for Final Study for Final

CP CHEMISTRY ACIDS AND BASES

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CP CHEMISTRY ACIDS AND BASES

Worksheet # 1 Lab Indicators and Everyday Acids/Bases

Define the following:

Indicators:

Procedure:1. Carefully dip a piece of blue litmus paper and red litmus paper and pH paper in each solution and

record the resulting color.2. Make sure all pieces of litmus paper go into the garbage can.3. Put a small amount of the substance into a test tube. Add phenolphthalein and record color change.

Rinse test tube.4. Put a small amount of substance into a test tube. Add bromothymol blue and record color change.

Rinse test tube.

Fill in the chart:

Substance pH Paper Red Litmus Paper

Blue Litmus Paper

Phenolphthalein

Bromothymol Blue

Tonic Water

Peroxide

Epsom Salt

Ammonia

Tap Water

Sprite

Salt Water

Alka-Seltzer

Sugar water

Maloox

Bleach

Vinegar

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CP CHEMISTRY ACIDS AND BASES

Questions:1. List the substances that you tested turned the red litmus paper blue. List the substances turned the

blue litmus paper red?Red Litmus Paper Blue Blue Litmus Paper Red

2. Substances that turn blue litmus paper red are called acids. Look over your list of acids. What are three properties that they share? How did they affect the other indicators?

Properties:pH paper: _______________ 1.

Phenolphthalien __________ 2.

Bromothymol Blue ________ 3.

3. Substances that turn red litmus paper blue area called bases. What are three properties that these chemicals share? How did they affect the other indicators?

Properties:pH paper: _______________ 1.

Phenolphthalien __________ 2.

Bromothymol Blue ________ 3.

4. Were any of the substances that you tested neither acidic or basic? List them here. Look up the name that is commonly used to describe these substances?Neither acidic or basic

Name of these substances: ______________________

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CP CHEMISTRY ACIDS AND BASES

WORKSHEET # 2Naming Acids, Bases, Carbonates, Metals and Salts

Identify the following as an ACID, BASE, CARBONATE, METAL or SALT.

A. LiOH _________________________________________

B. HCl _________________________________________

C. Na2CO3 _________________________________________

D. Mg _________________________________________

E. HBr _________________________________________

F. KCl _________________________________________

Write the name or formula for the following:

1. hydroiodic acid ______________________________

2. iodic acid ______________________________

3. sulfurous acid ______________________________

4. nitric acid ______________________________

5. acetic acid ______________________________

6. magnesium hydroxide ______________________________

7. calcium hydroxide ______________________________

8. lithium hydroxide ______________________________

9. HCl ______________________________

10. H2SO4 ______________________________

11. HClO2 ______________________________

12. HNO2 ______________________________

13. H3PO4 ______________________________

14. KOH ______________________________

15. Al(OH)3 ______________________________

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CP CHEMISTRY ACIDS AND BASES

Reactions with acids and metals

Metal + acid à ________ + _________

1. ____HCl + _____K à ______ + ______

2. ____HI + ___Li à _____ + ______

3. ___HBr + ____Ba à ______ + ______

Reactions with acids and carbonates

Acid + carbonate à __________ + __________ + _________

1. _____ HF + _____ Ca(CO3) à _______ + _________ + __________

2. _____ HCl + _____ Li2 (CO3) à _______ + ________ + __________

3. _____ HI + _____ Mg(CO3) à _______ + _________ + _________

Reactions with acids and bases

Acid + base à ____________ + _____________

1. _____ NaOH + HCl à _______ + ________

2. _____Al(OH)3 + HF à _______ + ________

3. _____ Ca(OH)2 + HNO3 à ______ + ________

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CP CHEMISTRY ACIDS AND BASES

Complete and balance the following after predicting products

1. Calcium and hydrobromic acid

2. Iron II carbonate and chloric acid

3. Barium hydroxide and nitrous acid

4. Lithium hydroxide and phosphoric acid

5. Aluminum and sulfuric acid

6. Chromium III carbonate and acetic acid

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CP CHEMISTRY ACIDS AND BASES

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CP CHEMISTRY ACIDS AND BASES

Worksheet #3 ~ Reactions with Acids LabPurpose

To examine the reaction between acids and metals To examine the reaction between acids and carbonates

Procedure 1. Use a dropper to put some of the acid into a test tube- about ½ full (carefully)2. Add a piece of the metal (or scoop or carbonate)3. Observe4. Pour material from test tube into waste beaker

Safety:

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CP CHEMISTRY ACIDS AND BASES

DataObservations (2 for each reaction)

Reaction A

1. _____________________________________________________________________

2. _____________________________________________________________________

Equation: _____________________________________________________________________

Reaction B

1. _____________________________________________________________________

2. _____________________________________________________________________

Equation: _____________________________________________________________________

Reaction C

1. _____________________________________________________________________

2. _____________________________________________________________________

Equation: _____________________________________________________________________

Reaction D

1. _____________________________________________________________________

2. _____________________________________________________________________

Equation: _____________________________________________________________________

Reaction E

1. _____________________________________________________________________

2. _____________________________________________________________________

Equation: _____________________________________________________________________

Conclusion In this lab, we observed 5 reactions. The acid and the carbonate reaction produced

____________________, ____________________ and ____________________.

The acid and the metal reaction produced ____________________ and ____________________

.

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CP CHEMISTRY ACIDS AND BASES

WORKSHEET # 4 ~ REVIEWNaming and writing formulas for common acids and bases

1. hydrobromic acid ______________________________

2. sulfuric acid ______________________________

3. nitric acid ______________________________

4. acetic acid ______________________________

5. strontium hydroxide ______________________________

6. sodium hydroxide ______________________________

7. HI _____________________________

8. H2SO3 ______________________________

9. HClO4 ______________________________

10. LiOH ______________________________

11. Al(OH)3 ______________________________

12. H2CO3 ______________________________

Complete and balance the following after predicting products

13. Calcium and hydroiodic acid

14. Copper II carbonate and perchloric acid

15. Magnesium hydroxide and nitrous acid

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CP CHEMISTRY ACIDS AND BASES

WORKSHEET # 5WORKSHEET pH

1. Draw and Label a pH scale

2. Calculate the pH of solutions with the following [H3O+]. Identify the solution asacidic, basic or neutral.

a) 1.00 x 10-3

b) 1.00 x 10-10

c) 6.59 x 10-10

d) 9.47 x 10-3

3. Find the pH of each of the following solutions and identify them as acidic, basic orneutral

a) pOH = 2.00

b) pOH = 8.00

c) pOH = 1.263

d) pOH = 9.714

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CP CHEMISTRY ACIDS AND BASES

4. Calculate the pH of solutions with the following [OH-]. Identify the solution asacidic, basic or neutral.

a) 1.00 x 10-9

b) 1.00 x 10-3

c) 9.56 x 10-4

d) 7.49 x 10-10

5. Find the pH and the [H3O+] of each of the following solutions and identify them as acidic, basic or neutral

a) pOH = 9.50

b) pOH = 3.65

c) pOH = 12.63

d) pOH = 1.14

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CP CHEMISTRY ACIDS AND BASES

WORKSHEET # 6 ~ REVIEW

Name the following:

1. HI ______________________________

2. HClO3 ______________________________

3. MgCO3 ______________________________

4. LiOH ______________________________

5. hydrochloric acid ______________________________

6. nitrous acid ______________________________

7. calcium carbonate ______________________________

8. sodium hydroxide ______________________________

Reactions:

9. Acid + Metal à _________ + __________

10. Acid + Carbonate à __________ + __________ + __________

11. Acid + Base à __________ + __________

12. Calculate the [OH-] for the following [H+]a) 3.42 x 10-5

b) 8.7 x 10-10

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CP CHEMISTRY ACIDS AND BASES

13. Calculate the [H+] for the following [OH-]a) 9.9 x 10-13

b) 1.0 x 10-10

14. Calculate the pH of solutions with the following [H3O+]. Identify the solution asacidic, basic or neutral.

a) 4.50 x 10-10

b) 6.59 x 10-5

15.Find the pH of each of the following solutions and identify them as acidic, basic orneutral

a)pOH = 8.00

b) pOH = 1.263

16. Draw and label the pH scale

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CP CHEMISTRY ACIDS AND BASES

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CP CHEMISTRY ACIDS AND BASES

Worksheet #7 - Acid Base TitrationPurpose: The purpose of this lab is to determine the molarity of sodium hydroxide by using the method of titration.

Procedure: 1. Rinse out both burets with distilled water.

2. Fill the left buret with acetic acid

3. Fill the right buret with sodium hydroxide

4. Drain 10.00 ml of acetic acid into a 50 ml flask

5. Add 2 drops of indicator (the solution should be clear)

6. Slowly add sodium hydroxide to the acid until the addition of one more drop turns the solution pink.

7. Record the volume of the sodium hydroxide to the hundredth of a ml

8. Repeat the procedure 2 more times and record data

9. Rinse the burets with distilled water and turn upside down in clamps

10. Calculate the molarity for each trial

11. Average the molarities

12. Calculate the percent error

Data:Write the balanced equation for the reaction:

Trial 1 Trial 2 Trial 3Volume of AcidVolume of Base

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CP CHEMISTRY ACIDS AND BASES

Calculations:Trial 1:

Trial 2:

Trial 3:

Average:

Percent Error:

Conclusion:In the experiment, we calculated the molarity of the base to be ______________. Our percent error

was ______________. Two sources of error include:

1. _________________________________________________________________________________

2. _________________________________________________________________________________

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CP CHEMISTRY ACIDS AND BASES

WORKSHEET #8REVIEW – ACIDS AND BASES

Naming and writing formulas for common acids and bases

1. hydroiodic acid ______________________________

2. iodic acid ______________________________

3. sulfurous acid ______________________________

4. acetic acid ______________________________

5. magnesium hydroxide ______________________________

6. lithium hydroxide ______________________________

7. HCl _____________________________

8. H2SO4 ______________________________

9. HClO2 ______________________________

10. KOH ______________________________

11. Al(OH)3 ______________________________

12. H2CO3 ______________________________

Fill in the following chart

Substance [H3O+] [OH-] pH pOH

HCl 2.50 x 10-2

H2SO4 5.62 x 104

NaOH 9.82

NH4OH 3.64

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CP CHEMISTRY ACIDS AND BASES

13. What is the pH scale - label

Complete and balance the following after predicting products

14. Calcium and hydroiodic acid

15. Copper II carbonate and perchloric acid

16. Magnesium hydroxide and nitrous acid

Solve for the molarity of the acid from the following data:MB = .35 M MA = ?

VB = 15.4 mL VA = 16.3 mL

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CP CHEMISTRY ACIDS AND BASES

Worksheet #9 - Nuclear Energy1. What is nuclear fission?

a. How does this process produce electricity?

2. What are two benefits to using nuclear fission?

3. What are two downsides to using nuclear fission?

4. How long does it take a 100.00g sample of Au-l 98 to decay to 6.25g (half life = 2.69 days)?

5. How many half-lives will pass by the time a 60.0g sample of Co-60 decays to 7.50?

6. How long does it take a 180g sample of Au-198 to decay to 22.5g (half life = 35.0 sec)?

7. What is the half-life of a radioactive isotope if a 500.0g sample decays to 62.5g in 24.3 hours?

8. How old is a bone if it presently contains 0.3125g of C-14, but it was estimated to have originally contained 80.000g of C-14 (half life = 5730 yr)?

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