For the given reaction, $2 A (s) + B (g) ⇌ C (g) + 2 D (s) + E (s)$ the degree of dissociation of B was found to be 20% at 300 K and 24% at 500 K. The rate of backward reaction

increases with increase in pressure and temperature

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increases with increase in pressure and decrease in temperature

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depends on temperature only and decreases with increase in temperature

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increases with increasing the concentration of B and increasing the temperature

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Solution

The correct option is C depends on temperature only and decreases with increase in temperature
Since, the number of moles in gaseous state in reactant and product side is same hence, no effect of pressure and rate depends only on temperature. Further the degree of dissociation increases with increase in temperature .Hence, high temperature favours forward reaction or the rate of backward reaction decrease with rise in temperature.

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For the given reaction, 2A(s)+B(g)⇌C(g)+2D(s)+E(s) the degree of dissociation of B was found to be 20% at 300 K and 24% at 500 K. The rate of backward reaction

For the given reaction, $2 A (s) + B (g) ⇌ C (g) + 2 D (s) + E (s)$ the degree of dissociation of B was found to be 20% at 300 K and 24% at 500 K. The rate of backward reaction