Question

6. Which of the following correctly represents a balanced Chemical reaction?

A. 3Fe (s) + 4H2O -- Fe3O4 (s) + 4H2 ↑ (g)

B. H2 (g) + Cl2 (g) - HCl ↑ (g)

C. Na(s) + H2O (l) -- NaOH (aq) + H2 ↑ (g)

D. 2Pb (NO3)2 (s) –HEAT-- 2PbO (s) + NO2 ↑ (g) + O2 ↑ (g)

which option is correct.​

Answer 1

Answer:

A. 3Fe (s) + 4H2O -- Fe3O4 (s) + 4H2 ↑ (g

Explanation:

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Answer 2

Correct option is

C

(i), (ii) and (iv)

Option (i) is correct as iron (Fe) is combining with oxygen to form iron (II, III) oxide (Fe

2

O

3

).

Option (ii) is correct as water (H

2

O) is being reduced by removal of oxygen to form hydrogen (H

2

) gas.

Option (iv) is correct as water (H

2

O) itself is being reduced and is oxidising Iron(Fe), thereby acting as an oxidising agent.