Chapter 9: Solutions

Potassium chloride has a solubility of $43gofKClin100.g$of $H_{2}Oat50°C.$Determine if each of the following forms an unsaturated or saturated solution at $20°C:(9.3)$

a) adding localid="1653998984557" $25gofKClto100.gof{H}_{2}O$

b) adding localid="1653998991946" $15gofKClto25gof{H}_{2}O$

c) addinglocalid="1653998999630" $86gofKClto150.gof{H}_{2}O$

Indicate whether each of the following ionic compounds is soluble or insoluble in water: $(9.3)$

a. $KCl$

b. $MgS{O}_4$

c. $CuS$

d. $AgN{O}_3$

e. $Ca{\left(OH\right)}_2$

Write a balanced equation for the dissociation of each of the following strong electrolytes in water:

a.$KCl$

b. $CaC{l}_2$

c. $K_{3}P{O}_4$

d.$Fe{\left(N{O}_3\right)}_3$

Indicate whether each of the following ionic compounds is soluble or insoluble in water: $(9.3)$

a. ${\mathrm{CuCO}}_3$

b. $FeO$

c. $M{g}_3{\left(P{O}_4\right)}_2$

d. ${\left(N{H}_4\right)}_{2}S{O}_4$

e. $NaHC{O}_3$

If $NaCl$has a solubility of $36.0gin100g$of $H_{2}Oat100°C$. how many grams of water are needed to prepare a saturated solution containing $80.0g$of $NaCl$? $(9.3)$

If the solid$NaCl$ in a saturated solution of $NaCl$ continues to dissolve, why is there no change in the concentration of the $NaCl$ solution? $(9.3)$

Calculate the mass percent $(m/m)$of a solution containing $15.5\mathrm{g}\text{of}{\mathrm{Na}}_2{\mathrm{SO}}_4\text{and}75.5\mathrm{g}\text{of}{\mathrm{H}}_2\mathrm{O}.\left(9.4\right)$localid="1654600997108" $75.5gof{H}_{2}O.(9.4)$

Calculate the mass percent$(m/m)$of a solution containinglocalid="1654601149382" $26gof{K}_{2}C{O}_3$andlocalid="1654601155761" $724gof{H}_{2}O.$$(9.4)$

How many milliliters of a $12\%(v/v)$ propyl alcohol solution would you need to obtain $4.5mL$of propyl alcohol?$(9.4)$

An $80$-proof brandy is a localid="1654601482390" $40.\%(v/v)$ethanol solution. The "proof" is twice the percent concentration of alcohol in the beverage. How many milliliters of alcohol are present in localid="1654601509722" $750mL$of brandy? $(9.4)$