Diagnostic Test

A solute is the substance being dissolved.

The solvent is....

• the dissolving medium

• the solute particel

• the gas medium

• the solution medium

When liquids are mixed, the liquid present

in the largest amount is called ...

• solution

• solvent

• solute

• concentrated

Molarity is...

• moles of solute in 1 liters of solvent

• moles of solvent in 1 liters of solute

• moles of solute in 1 liters of solution

• moles of solute in 1 moles of solution

from the following solutions, the ionic solution is...

• C6H12O6

• CHCl3

• NaCl

• CO(NH2)2

if 18 g of sugar (Mr=180) disollved in 100 g of water, calculate the molarity of sugar solution...

• 0,01 M

• 0,1 M

• 1 M

• 10 M

The following are mixed into a solution- 505 grams ethanol (C₂H₅OH, molar mass=46.0 g/mole), 215 grams methanol (CH₃OH, molar mass=32 g/mole), and 415 grams water (H₂O, molar mass=18.0 g/mole). The solvent is:

• C₂H₅OH

• CH₃OH

• H₂O

• None of these

Liquid A is mixed with liquid B forming solution AB. If the volume of AB is greater than the volume of A plus the volume of B, then the A-B intermolecular forces are:

• More attractive than A-A or B-B

• Similar to A-A and B-B

• More repulsive than A-A or B-B

• can't defined

A nonelectrolyte...

• α < 1

• α = 1

• α >1

• α =o

After mixing 10.00 g of compound A with 20.00 g of compound B, its is found that the mole fraction of compound A is 0.400. The mole fraction of compound B must be:

• 0,2

• 0,4

• 0,6

• not enough info

What is the percent by mass of a solution that is 1.00 molal K₂SO₄ (molar mass=174 g/mole) in water (molar mass=18.0 g/mole)?

• 0,148

• 1,48

• 14,8

• 148