Question

Which of the following are combustion reactions?


NaNO3 (aq) arrow Na+(aq) + NO3-(aq)

C2H6 (g) + O2 (g) arrow CO2 (g) + H2O (l)

Mg(s) + HCl (aq) arrow H2 (g) + MgCl2 (aq)

HCl (aq) + NaOH (aq) arrow HOH (l) + NaCl (s)

Answer 1

Answer:

2nd reaction C2H6 (g) + O2 (g) arrow CO2 (g) + H2O (l)

Explanation:

As the products are co2 and h20 which are product of combustion reaction this reaction is combustion reaction