Which of the following reactions are redox reactions?

a. H2CO3 (aq) + 2NH3 (aq) → 2NH4 + (aq) + CO32 - (aq)

b. 2Mg (s) + O2 (g) + 2H2O (l) → 2Mg2 + (aq) + 4OH - (aq)

c. Zn (NO3) 2 (aq) + 2NaOH (aq) → Zn (OH) 2 (s) + 2NaNO3 (aq)

d. 2H2O (l) + 2Cl - (aq) → H2 (g) + Cl2 (g) + 2OH - (aq)

Question

Nichols

Chemistry

28 January, 15:01

Which of the following reactions are redox reactions?

a. H2CO3 (aq) + 2NH3 (aq) → 2NH4 + (aq) + CO32 - (aq)

b. 2Mg (s) + O2 (g) + 2H2O (l) → 2Mg2 + (aq) + 4OH - (aq)

c. Zn (NO3) 2 (aq) + 2NaOH (aq) → Zn (OH) 2 (s) + 2NaNO3 (aq)

d. 2H2O (l) + 2Cl - (aq) → H2 (g) + Cl2 (g) + 2OH - (aq)

+1

Answers (1)

Know the Answer?

Dashawn Barajas · Answer 1

The correct answer is b. 2Mg (s) + O2 (g) + 2H2O (l) → 2Mg2 + (aq) + 4OH - (aq)

Explanation:

The Mg is oxidized to Mg 2+, and the oxygen (02) is reduced.

Which of the following reactions are redox reactions?a. H2CO3 (aq) + 2NH3 (aq) → 2NH4 + (aq) + CO32 - (aq)b. 2Mg (s) + O2 (g) + 2H2O (l) → 2Mg2 + (aq) + 4OH - (aq)c. Zn (NO3) 2 (aq) + 2NaOH (aq) → Zn (OH) 2 (s) + 2NaNO3 (aq)d. 2H2O (l) + 2Cl - (aq) → H2 (g) + Cl2 (g) + 2OH - (aq)

Which of the following reactions are redox reactions?

a. H2CO3 (aq) + 2NH3 (aq) → 2NH4 + (aq) + CO32 - (aq)

b. 2Mg (s) + O2 (g) + 2H2O (l) → 2Mg2 + (aq) + 4OH - (aq)

c. Zn (NO3) 2 (aq) + 2NaOH (aq) → Zn (OH) 2 (s) + 2NaNO3 (aq)

d. 2H2O (l) + 2Cl - (aq) → H2 (g) + Cl2 (g) + 2OH - (aq)