Which one of the following is an exothermic reaction?

Question

Which one of the following is an exothermic reaction? (A)  N2(g)+O2(g)+180.8kJ→ 2NO(g)  (B)  C( textgraphite)+2S(s)→ CS2(l)-91.9kJ  (C)  N2(g)+3H2(g)-92kJ→ 2NH3(g)  (D)  textC(g)+ textH text2 textO(g)→ textCO(g)+ textH text2 text(g)-131 text.1kJ

Tardigrade Admin · Accepted Answer

The reactions in which products has lesser energy than reactants, the energy is released in the reaction and such reactions are known as exothermic reactions, e.g. N2+3H2→ 2NH3+ text92 kJ In this equation energy is released. So, it is an example of exothermic reaction.

Q. Which one of the following is an exothermic reaction?

$N_{2} (g) + O_{2} (g) + 180.8 k J \to 2 NO (g)$

$C (graphite) + 2 S (s) \to C S_{2} (l) - 91.9 k J$

$N_{2} (g) + 3 H_{2} (g) - 92 k J \to 2 N H_{3} (g)$

$C(g)+ H_{2} O(g) \to CO(g)+ H_{2} (g)-131 .1kJ$

The reactions in which products has lesser energy than reactants, the energy is released in the reaction and such reactions are known as exothermic reactions, e.g. $N_{2} + 3 H_{2} \to 2 N H_{3} + 92 kJ$ In this equation energy is released. So, it is an example of exothermic reaction.

Q. Which one of the following is an exothermic reaction?

N2​(g)+O2​(g)+180.8kJ→2NO(g)

C(graphite)+2S(s)→CS2​(l)−91.9kJ

N2​(g)+3H2​(g)−92kJ→2NH3​(g)

C(g)+H2​O(g)→CO(g)+H2​(g)-131.1kJ

The reactions in which products has lesser energy than reactants, the energy is released in the reaction and such reactions are known as exothermic reactions, e.g. N2​+3H2​→2NH3​+92 kJ In this equation energy is released. So, it is an example of exothermic reaction.

$N_{2} (g) + O_{2} (g) + 180.8 k J \to 2 NO (g)$

$C (graphite) + 2 S (s) \to C S_{2} (l) - 91.9 k J$

$N_{2} (g) + 3 H_{2} (g) - 92 k J \to 2 N H_{3} (g)$

$C(g)+ H_{2} O(g) \to CO(g)+ H_{2} (g)-131 .1kJ$

The reactions in which products has lesser energy than reactants, the energy is released in the reaction and such reactions are known as exothermic reactions, e.g. $N_{2} + 3 H_{2} \to 2 N H_{3} + 92 kJ$ In this equation energy is released. So, it is an example of exothermic reaction.