Consider the reactions given below. On the basis of these reactions find out which of the algebric relations given in options (i) to (iv) is correct?
(a) C (g) + 4H (g) → CH4 (g); ∆r H = x kJ/ mol
(b) C (graphite,s) + 2H2 (g) → CH4 (g); ∆rH = y kJ /mol
(i) x = y
(ii) x = 2y
(iii) x > y
(iv) x < y
Consider the reactions given below. On the basis of these reactions find out which of the algebric relations given in options (i) to (iv) is correct?
(a) C (g) + 4H (g) → CH4 (g); ∆r H = x kJ/ mol
(b) C (graphite,s) + 2H2 (g) → CH4 (g); ∆rH = y kJ /mol
(i) x = y
(ii) x = 2y
(iii) x > y
(iv) x < y
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1 Answer
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This is a Multiple Choice Questions as classified in NCERT Exemplar
option (iii)
Same bonds are formed in reaction (a) and (b) but bonds between the reactant molecules are broken only in reaction (b)
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