Question 1

When KCl dissolves in water ________.

Accepted Answer

A) the Cl- ions are attracted to dissolved K+ ions 
B) the Cl- ions are attracted to the partial negative charge on the oxygen atom of the water molecule 
C) the K+ ions are attracted to Cl- ions on the KCl crystal 
D) the K+ ions are attracted to the partial negative charge on the oxygen atom of the water molecule 
E) the K+ ions are attracted to the partial positive charge on the hydrogen atoms of the water molecule

Question 2

How many equivalents are in 0.40 mole of K+ ?

Accepted Answer

A) 0.40 Eq 
B) 0.80 Eq 
C) 0.20 Eq 
D) 2.0 Eq 
E) 1.0 Eq

Question 3

The process by which a semipermeable membrane allows water molecules,small molecules,and ions to pass through while retaining large particles is called ________.

Accepted Answer

A) osmotic pressure 
B) dialysis 
C) solvation 
D) dilution 
E) hydration

Question 4

________ can pass through filters but cannot pass through semipermeable membranes.

Accepted Answer

The answer of ________ can pass through filters but cannot...

Question 5

What volume of a 2.00 M KCl solution is required to prepare 500.mL of a 0.100 M KCl solution?

Accepted Answer

A) 0.0400 mL 
B) 25.0 mL 
C) 2.00 mL 
D) 1.00 × 104 mL 
E) 5.00 × 102 mL

Question 6

What is the molarity of a solution that contains 17 g of NH3 in 0.50 L of solution?

Accepted Answer

A) 34 M 
B) 2.0 M 
C) 0.50 M 
D) 0.029 M 
E) 1.0 M

Question 7

A red blood cell will undergo hemolysis in ________.

Accepted Answer

A) water 
B) 0.9% NaCl 
C) 5% glucose 
D) 5% NaCl 
E) 10% glucose

Question 8

An aqueous mixture containing starch (a colloid),NaCl,glucose,and albumin (a colloid)is placed in a dialysis bag and immersed in distilled water.Which of the following correctly describes the location of the indicated substance after dialysis?

Accepted Answer

A) albumin inside 
B) starch outside 
C) albumin inside and outside 
D) water inside only 
E) starch inside and outside

Question 9

When MgO is added to water,the salt will be ________.

Accepted Answer

The answer of When MgO is added to water,the salt...

Question 10

What is the molarity of a KCl solution made by diluting 75.0 mL of a 0.200 M solution to a final volume of 100.mL?

Accepted Answer

A) 0.267 M 
B) 0.150 M 
C) 0.200 M 
D) 6.67 M 
E) 0.100 M

Question 11

In a solution,the solvent ________.

Accepted Answer

A) is a liquid 
B) can be a liquid or gas 
C) can be a solid,liquid,or gas 
D) is never a solid 
E) is the substance present in the smallest concentration

Question 12

In the process known as osmosis,________ moves through a semipermeable membrane into an area of ________ concentration.

Accepted Answer

A) solute,lower solute 
B) solute,higher solute 
C) solvent,lower solute 
D) solvent,lower solvent 
E) solvent,higher solvent

Question 13

Which starch solution will decrease in volume as osmosis occurs?

Accepted Answer

A) 4% 
B) 10% 
C) Neither exerts osmotic pressure. 
D) They exert equal osmotic pressures. 
E) They exert opposite osmotic pressures.

Exam 9: Solutions

When KCl dissolves in water ________.

How many equivalents are in 0.40 mole of K⁺ ?