Which reactions are oxidation-reduction reactions?

1. FeS (s) + 2HCl (aq) → H2S (g) + FeCl2 (g)

2. AgNO3 (aq) + NaCl (aq) → AgCl (s) + NaNO3

3. 2C3H6 (g) + 9O2 (g) → 6CO2 (g) + 6H2O (g)

4. Fe2O3 (s) + 3CO (g) → 2Fe (l) + 3CO2 (g)

Question

Chemistry

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22 March, 01:33

Which reactions are oxidation-reduction reactions?

1. FeS (s) + 2HCl (aq) → H2S (g) + FeCl2 (g)

2. AgNO3 (aq) + NaCl (aq) → AgCl (s) + NaNO3

3. 2C3H6 (g) + 9O2 (g) → 6CO2 (g) + 6H2O (g)

4. Fe2O3 (s) + 3CO (g) → 2Fe (l) + 3CO2 (g)

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Answers (1)

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Adriana Villegas · Answer 1

3 and 4 are oxidation and reduction reactions.

for 3, the carbon in C3H6 lost hydrogen and gained oxygen which results in it being oxidised

in 4, Fe2O3 is reduced by CO to form Fe

Which reactions are oxidation-reduction reactions?1. FeS (s) + 2HCl (aq) → H2S (g) + FeCl2 (g)2. AgNO3 (aq) + NaCl (aq) → AgCl (s) + NaNO33. 2C3H6 (g) + 9O2 (g) → 6CO2 (g) + 6H2O (g)4. Fe2O3 (s) + 3CO (g) → 2Fe (l) + 3CO2 (g)

Which reactions are oxidation-reduction reactions?

1. FeS (s) + 2HCl (aq) → H2S (g) + FeCl2 (g)

2. AgNO3 (aq) + NaCl (aq) → AgCl (s) + NaNO3

3. 2C3H6 (g) + 9O2 (g) → 6CO2 (g) + 6H2O (g)

4. Fe2O3 (s) + 3CO (g) → 2Fe (l) + 3CO2 (g)