Question

Identify each category of substance as soluble or insoluble in silver nitrate carbonate and phosphate of group 1 halide (Br-, Cl-, and I-) salts.

a) Soluble
b) Insoluble
c) Both soluble and insoluble
d) Cannot be determined

Answer 1

Mg(OH)2 is insoluble, KBr is soluble, and Pb(NO3)2 is soluble.

Step-by-step explanation:

a. Mg(OH)2: Insoluble

b. KBr: Soluble

c. Pb(NO3)2: Soluble

Based on the solubility rules, Mg(OH)2 is insoluble because hydroxides are generally insoluble except those formed with group 1 cations and Ca²+, Sr²+, and Ba²+. KBr is soluble since all bromides are soluble except those combined with Pb²+. Pb(NO3)2 is soluble since nitrates are generally soluble.