question 4 (10 points)\nwhich one of the following compounds will be soluble in water?\na) caco3\nb) pbs\nc)…
question 4 (10 points)\nwhich one of the following compounds will be soluble in water?\na) caco3\nb) pbs\nc) nh4cl\nd) agbr\ne) cu(oh)2
Answer
Explanation:
Step1: Recall solubility rules
Salts of ammonium ($NH_4^+$) are generally soluble in water.
Step2: Analyze each option
- Option A: $CaCO_3$ is a carbonate, and most carbonates are insoluble in water.
- Option B: $PbS$ is a sulfide, and most metal sulfides are insoluble in water.
- Option C: $NH_4Cl$ is an ammonium - salt. According to solubility rules, ammonium salts are soluble in water.
- Option D: $AgBr$ is a bromide. Silver bromide is insoluble in water.
- Option E: $Cu(OH)_2$ is a hydroxide. Most metal hydroxides are insoluble in water.
Answer:
C. $NH_4Cl$