Question : 71.              What will happen to a blood cell that placed : 1335511

71.              What will happen to a blood cell that is placed in pure water?

A)The cell will shrink because there will be a net flow of water to the outside of the cell.

B)The cell will shrink because there will be a net flow of electrolytes to the outside of the cell.

C)The cell will expand because there will be a net flow of water to the inside of the cell.

D)The cell will expand because there will be a net flow of electrolytes to the inside of the cell.

E)Nothing will happen because the cell is impermeable.

72.              What will happen to a blood cell that is placed in an aqueous solution that has a high salt concentration relative to the blood cell concentration?

A)The cell will shrink because there will be a net flow of water to the outside of the cell.

B)The cell will shrink because there will be a net flow of electrolytes to the outside of the cell.

C)The cell will expand because there will be a net flow of water to the inside of the cell.

D)The cell will expand because there will be a net flow of electrolytes to the inside of the cell.

E)Nothing will happen because the cell is impermeable.

73.              Calculate the freezing point of a 2.0 m solution of sucrose in water?  Sucrose is a nonelectrolyte. The normal freezing point of pure water is 0.00°C.

Kf (water) = –1.86°C/m

A)  –1.86 °C    B)  –3.72°C    C)  –2.00°C    D)  3.72°C    E)  1.86°C

74.              Calculate the boiling point of a 4.0 m solution of sucrose in water?  Sucrose is a nonelectrolyte. The normal boiling point of pure water is 100.0°C.

Kb (water) = 0.52°C/m

A)  2.1°C    B)  97.9°C    C)  96.0°C    D)  94.0°C    E)  102.1°C

75.              Calculate the freezing point of a 2.0 m solution of NaCl in water?  Remember that NaCl is an electrolyte. The normal freezing point of pure water is 0.00°C.

Kf (water) = –1.86°C/m

A)  –2.08 °C    B)  –3.72°C    C)  –7.44°C    D)  7.44°C    E)  3.74°C

76.              Calculate the boiling point of a 4.0 m solution of KI in water?  Remember that KI is an electrolyte. The normal boiling point of pure water is 100.0°C.

Kb (water) = 0.52°C/m

A)  101.0 °C    B)  104.2°C    C)  96.0°C    D)  102.1°C    E)  4.16°C

77.              Calculate the freezing point of a 1.0 m solution of Ca(NO3)2 in water?  Remember that Mg(NO3)2 is an electrolyte. The normal freezing point of pure water is 0.00°C.

Kf (water) = –1.86°C/m

A)  1.56 °C    B)  5.58°C    C)  1.86°C    D)  –5.58°C    E)  –1.86°C

78.              Which of the following aqueous solutions should have the lowest freezing point?

A)1.0 m C12H22O11

B)1.0 m NaNO3

C)1.0 m NaCl

D)1.0 m MgCl2

E)All should have the same freezing point

79.              Which of the following aqueous solutions should have the highest boiling point?

A)1.0 m MgCl2D)1.0 m C12H22O11

B)1.0 m NaNO3E)All should have the same boiling point

C)1.0 m NaCl

80.              Which of the following properties of water increases as the concentration of particles dissolved in the water increases?

A)vapor pressureD)melting point

B)boiling pointE)none of these

C)freezing point