chp 3 sc xth
2
I. Fill in the blank: a. Most of the acidic substance are _______ in taste. b. Phenolphthalein is ______________ type of indicator. c. The strength of basic substance is represented by ______________. d. pH scale ranges from ________ to _____. e. Acids and bases neutralie each other to form ____ and _____. f. !odium or potassium salts of higher fatty acids are termed as _______. g. In Fe!" # .$H %&' H %& represents ______________. h. (&) *a+l is kno,n as __________. II. *ame the carbo-ylic acids present in: Acid Acid Tamarind Milk utter "range /oots of plants 0alerum/ed ants 1emon Honey bee I II .2rite short notes on: a. Indicators 3,ith proper e-ample4. b. pH scale 3,ith proper diagram4 c. 2ater of crystalliation 3,ith e-ample4. I5. Ans,er the follo,ing: (. Ho, do metal carbonates react ,ith acids %. 6-plain in detail about hydronium ion. 7. 2hat is uni0ersal indicator8 9oes Mg3"H4 % react ,ith sodium hydro-ide8 If not' ,hy8 #. !tate applications of baking soda. 5. Ho, do acids and bases react ,ith each other 8 2hat is the name of the process8 2hat product is obtained out
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Transcript of chp 3 sc xth
I. Fill in the blank: a. Most of the acidic substance are _______ in taste.
b. Phenolphthalein is ______________ type of indicator.
c. The strength of basic substance is represented by ______________.d. pH scale ranges from ________ to _____.
e. Acids and bases neutralize each other to form ____ and _____.f. Sodium or potassium salts of higher fatty acids are termed as _______.g. In FeSO4 .7H20, H20 represents ______________.h. 10% NaCl is known as __________.
II. Name the carboxylic acids present in:
AcidAcid
TamarindMilk
ButterOrange
Roots of plants valerumRed ants
Lemon Honey bee
III. Write short notes on: a. Indicators (with proper example). b. pH scale (with proper diagram)
c. Water of crystallization (with example).IV. Answer the following:
1. How do metal carbonates react with acids 2. Explain in detail about hydronium ion. 3. What is universal indicator? Does Mg(OH)2 react with sodium hydroxide? If not, why?
4. State applications of baking soda.
V. How do acids and bases react with each other ? What is the name of the process? What product is obtained out of reaction?
