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1. Which of the following reaction represents cathode reaction in chrom plating? a. Cr (s) →...

1. Which of the following reaction represents cathode reaction in chrom plating?

a. Cr (s) → Cr6+ (aq) + 6 e¯­

b. Cr (s) → Cr3+ (aq) + 3 e¯­

c. Cr3+ (aq) + 3 e¯­ → Cr (s)

d. Cr (s) → Cr3+ (aq) + 6 e¯­

2. The molar solubility of AgBr is 6.3 × 10−7 M. What is its Ksp?

3. Co2+ (aq) + 6 H2O (l) ⇌ Co(H2O)62+ (aq)

the ligand(s) is/are:

a. Co2+

b. Co(H2O)62+

c. H2O

d. OH –

e. H3O+

4.Nitrogen reacts with excess hydrogen to form ammonia; N2 (g) + 3H2 (g) → 2NH3 (g)   

Which burns in excess oxygen to form nitrogen oxide

4NH3 (g) + 5O2 (g) → 4NO (g) + 6H2O

How much NO will be produced from 5.0 moles of N2?

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