Chapter 9: Solutions

An intravenous solution to replace potassium loss contains $40mEq/L$each of $K^{+}$and $C{l}^{-}$. How many moles each of $K^{+}$and $C{l}^{-}$ are in $1.5L$ of the solution?

An intravenous solution contains $40mEq/L$of $C{l}^{-}$and $15mEq/L$of$HP{O_4}^{2-}$. If$N{a}^{+}$is the only cation in the solution, what is the$N{a}^{+}$concentration, in milliequivalents per liter?

Identify the solute and the solvent in each solution composed of the following:

a. $10.0mL$of acetic acid and $200mL$of water

b. $100.0mL$of water and $5.0g$of sugar

c. $1.0g$of $B{r}_2$and $50.0mL$of methylene chloride$\left(l\right)$

A Ringer's solution contains the following concentrations $(mEq/L)$of cations: role="math" localid="1652538986943" $N{a}^{+}147,K^{+}4,andC{a}^{2+}4.$If $C{l}^{-}$is the only anion in the solution, what is the $C{l}^{-}$ concentration, in milliequivalents per liter?

When Michelle's blood was tested, the chloride level was $0.45g/dL.$

a. What is this value in milliequivalents per liter?

b. According to Table $9.6$, is this value above, below, or within the normal range?

After dialysis, the level of magnesium in Michelle's blood was $0.0026g/dL.$

a. What is this value in milliequivalents per liter?

b. According to Table $9.6$, is this value above, below, or within the normal range?

State whether each of the following refers to a saturated or an unsaturated solution:

a. A crystal added to a solution does not change in size.

b. A sugar cube completely dissolves when added to a cup of coffee.

c. A uric acid concentration of $4.6mg/100mL$in the kidney does not cause gout.

State whether each of the following refers to a saturated or an unsaturated solution:

a. A spoonful of salt added to boiling water dissolves.

b. A layer of sugar forms on the bottom of a glass of tea as ice is added.

c. A kidney stone of calcium phosphate forms in the kidneys when urine becomes concentrated.

Determine whether each of the following solutions will be saturated or unsaturated at ${20}^{\circ }C$:

a. adding $25g$of $KCl$to $100g$of $H_{2}O$

b. adding $11g$of $NaN{O}_3$to $25g$of $H_{2}O$

c. adding $400g$of sugar to $125g$of $H_{2}O$

Determine whether each of the following solutions will be saturated or unsaturated at ${50}^{\circ }C$:

a. adding $25g$of $KCl$to role="math" localid="1652588032291" $50gof{H}_{2}O$

b. adding $150gofNaN{O}_3$to role="math" localid="1652588024461" $75gof{H}_{2}O$

c. adding $80g$of sugar to $25gof{H}_{2}O$