1) Which statement is false about the solution of sodiumchloride (NaCl) dissolved in water?

A) The solvent of this salt solution is water.

B) The solute of this salt solution is NaCl.

C) The ions from the NaCl salt crystal become hydrated and dispersethroughout the water.

D) This salt solution is a non-aqueous solution.

2) What two processes are occurring at the same rate when asaturated salt solution is in dynamic equilibrium?

A) freezing and condensation

B) freezing and sublimation

C) dissolution and precipitation

D) evaporation and condensation

3) What equation represents the hydration process of magnesiumchloride dissolving in water?

Tip:
Major group 1, +1 charge; major group 2, +2 charge; major group 3,+3 charge; major group 4, +4 or -4 charge.
Major group 5, -3 charge; major group 6, -2 charge, major group 7,-1 charge; major group 8, 0 charge.
Mg belongs to the major group 2. Thus it has +2 charge in the ionform of Mg 2+.
Cl belongs to the major group 7. Thus it has -1 charge in the ionform of Cl -.

A) MgCl2( s) --> Mg2+(aq) + Cl–(aq)

B) MgCl(s) --> Mg+(aq) + Cl-(aq)

C) MgCl2( s) --> Mg2+(aq) + 2Cl–(aq)

D) MgCl2( s) --> 2Mg2+(aq) + Cl–(aq)

4) What is the name of Ca3(PO4)2?

A) Calcium phosphate

B) Tricalcium diphosphate

C) Calcium diphosphate

D) Tricalcium phosphate

5) What is the chemical formula of aluminum hydroxide?

A) AlOH

B) Al3OH

C) Al(OH)3

D) AlOH3

6) Which is a barrier, such as a cell membrane, that limits thepassage of certain molecules and ions from one side to the otherand allows other molecules through?

A) regulating membrane

B) permeable membrane

C) semipermeable membrane

D) U-tube membrane

7) Which statement is false about osmosis?

A) Water molecules move across a semipermeable membrane from aregion of low ion concentration to a region of higher ionconcentration.

B) Water molecules moving across a semipermeable membrane dilutethe solution in one side until the ion concentration there is thesame as that in the other side.

C) Osmosis moves the concentrations of substances on the twosides of the membrance toward equilibrium.

D) Solute molecules move across a semipermeable membrane from aregion of low ion concentration to a region of higher ionconcentration.

8) Which statement is false about osmosis in living cells?

A) A cell in which the ion concentration inside is the same as theion concentration outside maintains its original size.

B) A cell that has a higher ion concentration inside than outsideswells as water moves out of the cell.

C) A cell that has a lower ion concentration inside than outsideshrivels as water leaves the cell.

D) A cell that has a higher ion concentration inside than outsideswells as water moves into of the cell.

9) Green Beat at the end of Chapter 9 deals with thequestion: Is it possible to drink too much water? In thisstory is introduced an incident where a lady died probably ofdrinking too much water at a water-drinking contest. What would bean unlikely cause of her death?

A) swelling of her brain cells

B) edema of her brain cells

C) hyponatremia

D) deficiency of hormones

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The detailed answer for the above question is provided below Question 1 Answer D This NaCl solution is an aqueous solution Because in the solution pre... View the full answer