One liter of 5.0 M HCl contains how many moles of HCl? M = 5.0 mol= ? L = 1 L x = 5 mol.

10
Concentration

Transcript of One liter of 5.0 M HCl contains how many moles of HCl? M = 5.0 mol= ? L = 1 L x = 5 mol.

Page 1: One liter of 5.0 M HCl contains how many moles of HCl? M = 5.0 mol= ? L = 1 L x = 5 mol.

Concentration

Page 2: One liter of 5.0 M HCl contains how many moles of HCl? M = 5.0 mol= ? L = 1 L x = 5 mol.

Molarity (M)

solutionofL

soluteofmoles

__

__

L

molM

Page 3: One liter of 5.0 M HCl contains how many moles of HCl? M = 5.0 mol= ? L = 1 L x = 5 mol.

One liter of 5.0 M HCl contains how many moles of HCl?

Practice

M = 5.0mol= ?L = 1 L

L

xM

10.5 x = 5 mol

Page 4: One liter of 5.0 M HCl contains how many moles of HCl? M = 5.0 mol= ? L = 1 L x = 5 mol.

55mL of 2.4M glucose contains how many moles of glucose?

Need to change mL to L

Practice

M = 2.4mol = ?L = 55mL 0.055L

L

xM

055.04.2 x = 0.132 mol

Page 5: One liter of 5.0 M HCl contains how many moles of HCl? M = 5.0 mol= ? L = 1 L x = 5 mol.

How could we make a 0.100M solution of CuSO4 * 5H2O?

Molar mass = 249.6 g/mol

Practice

L

xM

1100.0 x = 0.100 mol

mol

gmol

1

6.249100.0 24.96 g

Page 6: One liter of 5.0 M HCl contains how many moles of HCl? M = 5.0 mol= ? L = 1 L x = 5 mol.

Dilutions

2211 VMVM M is concentration in Molarity

V is volume (can be mL of L)

Page 7: One liter of 5.0 M HCl contains how many moles of HCl? M = 5.0 mol= ? L = 1 L x = 5 mol.

How can we make 500mL of 1.00M HCl from 6.00M HCl?

Practice

V1 = 500mLM1 = 1.00 MV2 = ?M2 = 6.00M

xMmLM 00.650000.1

x = 83.3 mL or 0.0833 L

Page 8: One liter of 5.0 M HCl contains how many moles of HCl? M = 5.0 mol= ? L = 1 L x = 5 mol.

What is the molarity of a 250mL solution containing 9.46g CsBr?

Molar mass of CsBr = 213 g/mol

Practice

gCsBr

molCsBrg213

146.9 0.0444 mol CsBr

L

molM

L

molCsBr

250.0

0444.0 0.176M

Page 9: One liter of 5.0 M HCl contains how many moles of HCl? M = 5.0 mol= ? L = 1 L x = 5 mol.

Percent by Mass

100_

_

solutiong

soluteg

** remember that solution is (solute + solvent)

Page 10: One liter of 5.0 M HCl contains how many moles of HCl? M = 5.0 mol= ? L = 1 L x = 5 mol.

What is the mass percent of a solution made from 199g of NiBr2 in 5.00x102 g of water?

Solution = solute + solvent

Practice

Solute = 199gSolution = 500g + 199g = 699g (solvent) (solute)

100699

199

g

g28.5% NiBr2


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CHAPTER 9 CALCULATIONS FROM CHEMICAL …faculty.chemeketa.edu/lemme/CH 121/solutions/Hein9thCh09.pdf · b = 2.6 g HCl 110.5 mol NH 32a 17.03 g mol b = 179 g NH 3 1125 kg CaCO 32a

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