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Difficult

Describing Solution Formation

APCHEM-EFXV18

Which of the following equations does NOT correctly depict the process by which the given solute dissolves in water?

A

Solid calcium nitrate is added to water to form an aqueous solution.

$Ca{ \left( { NO }_{ 3 } \right) }_{ 2 }(s)\rightarrow { Ca }^{ 2+ }(aq)+2{ NO }_{ 3 }^{ - }(aq)$

B

Magnesium hydroxide, a very slightly soluble solid, is dissolved in water.

$Mg{ \left( OH \right) }_{ 2 }(s)\rightarrow { Mg }^{ 2+ }(aq)+2{ OH }^{ - }(aq)$

C

Sucrose, table sugar, ${C}_{12}{H}_{22}{O}_{11}$, dissolves in water.

${ C }_{ 12 }{ H }_{ 22 }{ O }_{ 11 }(s)\rightarrow { C }_{ 12 }{ H }_{ 22 }{ O }_{ 11 }(aq)$

D

Phosphoric acid, a weak triprotic acid, dissolves in water.

${ H }_{ 3 }{ PO }_{ 4 }(l)\rightarrow 3{ H }^{ + }(aq)+{ PO }_{ 4 }^{ 3- }(aq)$