Problem: Complete and balance each of the following equations for gas-evolution reactions. Identify all of the phases in your answer.Express your answer as a chemical equation. Identify all of the phases in your answer.a. HBr(aq)+NiS(s)→b. NH4I(aq)+NaOH(aq)→c. HNO3(aq)+Li2S(aq)→d. HNO3(aq)+K2CO3(aq)→ 

FREE Expert Solution

We are asked to complete and balance each of the given equations for gas-evolution reactions.

Recall:

Solubility Rules:

Soluble Ionic Compounds:

Group 1A ions (Li+, Na+, K+, etc.) and Ammoniumion (NH4+) are soluble
 ▪ Nitrates (NO3-), Acetates (CH3COO- or C2H3O2-), and most Perchlorates (ClO4-) are soluble
 ▪ Cl-, Br-, and I- are soluble except when paired with Ag+, Pb2+, Cu+, Hg22+
 ▪ Sulfates (SO42-) are soluble except those of Ca2+, Sr2+, Ba2+, Ag+, and Pb2+

• Insoluble Ionic Compounds:

Hydroxides (OH-) and Sulfides (S2-) are insoluble except when with Group 1A ions (Li+, Na+, K+, etc.) and ammonium ion (NH4+) and Ca2+, Sr2+, Ba2+
 ▪ Carbonates (CO32-) and Phosphates (PO43-) are insoluble except when with Group 1A ions (Li+, Na+, K+, etc.) and ammonium ion (NH4+)

The phases in a reaction may be indicated using:

solid→(s)

liquid→(l)

gas→(g)

aqueous→(aq)


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Problem Details

Complete and balance each of the following equations for gas-evolution reactions. Identify all of the phases in your answer.

Express your answer as a chemical equation. Identify all of the phases in your answer.

a. HBr(aq)+NiS(s)→
b. NH4I(aq)+NaOH(aq)→
c. HNO3(aq)+Li2S(aq)→
d. HNO3(aq)+K2CO3(aq)→
 

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