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Total questions: 22

Worksheet time: 7mins

Name

Class

Date

what is mass percentage

mass of component in solid
-----------------------------
total mass of solute

mass of component in solution
-----------------------------
total mass of solvent

mass of component in solution
-----------------------------
total mass of solution

mass of component in solution
-------------------x100
total mass of solution

vol. % age

vol of component in solid
---------------------x100
total mass of solution

mass of component in solid
----------------------x100
total mass of solute

vol of component
----------------------x100
total vol of solute

vol of component
----------------------x100
total vol of solution

Raoults law determine

Partial pressure of substance

Vapour pressure of solution

Volatility of substance

atomic pressure of the substance

Raoults law Works only for

Ideal Mixtures

Solutions

Ideal Gases

Immiscible Liquids

p=K_H x

formula deals with _____ law , which is applicable for ________ solutions

Henry law, concentrated

Henry law, dilute

Raoults law, dilute

Raoults law, concentrated

Higher is the value of K_H ___________ is the value of solubility of gas in a solvent.

higher

lower

first increase then decrease

only decreases

A solution having higher osmotic pressure is called ____________ solution.

Isotonic

Hypotonic

Hypertonic

None of the above

Molality is defined as ________ divided by _____________

liters solution, mols solute

mols solute, liters solvent

kg solvent, mols solute

mols solute, kg solvent

Molarity is defined as _________ divided by ___________

mol, liters

mol, kg

kg, liters

liters, kg

10.

How many mols of HCl are in 3 liters of 2.0M HCl solution?

2.0

1.5

6.0

0.66

11.

What is the molarity of a 2 liter solution containing 5 moles of NaCl?

2.5

0.4

2.5 moles/liter

10 moles/liter

12.

How many moles of NaCl are present in 6000. ml a 1.5 M NaCl solution?

9 moles NaCl

9000

4000 moles NaCl

13.

What is the molality of a solution made by dissolving 2 moles of NaOH in 400 grams of water?

5 mol/kg. solvent

4 mol/kg solvent

3 mol/kg. solvent

2.5 moles /kg solvent

14.

True or False? The higher the concentration of a solution the less solutes it has in it.

True

False

15.

How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?

1074 mol

0.069 mol

1.07 mol

62.7 mol

16.

How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM = 58.45)?

0.625 g NaCl

625 g NaCl

36.5 g NaCl

0.04 mol NaCl

17.

How many grams of AgNO₃ (MM = 169.87) are needed to prepare 0.125M solution in 250 mL of water?

.03g

0.5g

5.3g

84.9g

18.

The sum of all mole fractions equal

0.1

19.

suppose a hydrochloric acid solution contains 36 g of HCl and 64 g of H₂O.what is the mole fraction of HCl?

0.78

0.99

0.22

3.6

20.

the number of moles of solute or solvent in a solution divided by the total number of moles of solute and solvent is known as

molarity

mole fraction

molality

percent by mass

21.

What is the molality of a solution made by dissolving 2 moles of NaOH in 400 grams of water?

5 mol/kg. solvent

4 mol/kg solvent

3 mol/kg. solvent

2.5 moles /kg solvent

22.

What is the molality of a solution in which 3.0 moles of NaCl is dissolved in 1.5 Kg of water?

2.0 M

0.22 m

135 m

2.0m

100 %

solutions

Total questions: 22

Worksheet time: 7mins

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