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Decomposition Reaction

Consider the ...

Question

Consider the given graph.

Which of the following reactions is the best fit for the above graph?

(i) $C H_{4} + 2 O_{2} \Rightarrow C O_{2} + 2 H_{2} O$

(ii) $C a C O_{3} \to C a O + C O_{2}$

(iii) $N_{2} + O_{2} \to 2 N O$

Only (i)

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Only (ii)

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Both (i) and (iii)

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Both (ii) and (iii)

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Solution

The correct option is D
Both (ii) and (iii)
In the given graph, the energy of the products (P) is greater than the energy of the reactants (R). Therefore, the chemical reaction that would be the best fit for the graph should be an endothermic reaction.

The following reactions are endothermic as energy is absorbed in these reactions.

(ii)

(iii) $N_{2} (g) + O_{2} (g) \to 2 N O (g) N i t r o g e n O x y g e n N i t r i c o x i d e$

Hence, the correct answer is option (d).

Suggest Corrections

Similar questions

Which of the following are examples of combination reaction?

(i) $C a O + O_{2} \to 2 C a C O_{3}$

(ii) $C a C O_{3} \to C a O + C O_{2}$

(iii) $M g O + C O_{2} \to M g C O_{3}$

(iv) $F e + S \to F e S$

(v) $2 A g C l + s u n l i g h t \to 2 A g + C l_{2}$

(vi) $C H_{4} + 2 O_{2} \to C O_{2} + 2 H_{2} O$

(vii) $N a_{2} O + H_{2} O \to 2 N a O H$

Which of the following are examples of combination reactions?

(i) $C a O + O_{2} \to 2 C a C O_{3}$

(ii) $C a C O_{3} \to C a O + C O_{2}$

(iii) $M g O + C O_{2} \to M g C O_{3}$

(iv) $F e + S \to F e S$

(v) $2 A g C l + s u n l i g h t \to 2 A g + C l_{2}$

(vi) $C H_{4} + 2 O_{2} \to C O_{2} + 2 H_{2} O$

(vii) $N a_{2} O + H_{2} O \to 2 N a O H$

K

K_{1}

K_{2}

N_{2} + 2 O_{2} ⇋ 2 N O_{2}, K

N_{2} + O_{2} ⇋ 2 N O, K_{1}

2 N O + O_{2} ⇋ 2 N O_{2}, K_{2}

C H_{4} + 2 O_{2} \to 2 H_{2} O

P b (N O_{3})_{2} + 2 K I \to P b I_{2} + 2 K N O_{2}

C a O + H_{2} O \to C a (O H)_{2}

K_{C}

C a C O_{3} (s) ⇌ C a O (s) + C O_{2} (g)

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