Chemistry Practice Problems Electrolytes Practice Problems Solution: Which of the following is a weak electrolyte?(A) H...

Solution: Which of the following is a weak electrolyte?(A) H3PO4(B) K2CO3(C) AgNO3(D) H2SO4(E) KOH

Problem

Which of the following is a weak electrolyte?

(A) H3PO4

(B) K2CO3

(C) AgNO3

(D) H2SO4

(E) KOH

Solution

Establish the difference of each electrolyte and determine which is the weak electrolyte


Recall that:


• Strong electrolytes: dissociate completely in water; include soluble ionic salts, strong acids, and bases

a. Ionic salts: those that follow the rules of being soluble in solubility rules

b. Strong acids: HCl, HBr, HI, HNO3, H2SO4, HClO4, HClO3

c. Strong bases: Group 1A and 2A (Ca and lower) metals paired with OH, H, O2–, or NH2

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