A reaction- - A -B- C-D- q- is found to have a positive entropy change- The reaction will be -Possible at high temperaturePossible at low temperature onlyPossible at any temperatureNot possible at any temperature

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Entropy

A reaction, ...

Question

A reaction, $A + B \to C + D + q$ ; is found to have a positive entropy change. The reaction will be :

Possible at high temperature

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Possible at low temperature only

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Not possible at any temperature

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Possible at any temperature

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Solution

The correct option is C Possible at any temperature
$Δ G = Δ H - T Δ S$
for the given reaction, $d e l t a H = - v e$ as it is exothermic, $Δ S = + v e$ , then $Δ G = v e$ . So, the reaction will be spontaneous at all temperatures.

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Similar questions

A reaction, A + B $\to$ C + D + q is found to have a positive entropy change. The reaction will be
(i) possible at high temperature
(ii) possible only at low temperature
(iii) not possible at any temperature
(iv) possible at any temperature

Δ

G is the net energy available to do useful work and is a measure of free energy. If a reaction has positive enthalpy change and positive entropy change, under what conditions will the reaction be spontaneous?

Q. A reaction,

A + B ⟶ C + D + q

is found to have a positive entropy change. The reaction will be:

Q. A reaction,

A + B ⟶ C + D - q

, is found to have a positive entropy change, the reaction will be:

Q. A reaction A+B

\to

C+D is found to have a positive entropy change. The reaction will be :

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A reaction, A+B→C+D+q; is found to have a positive entropy change. The reaction will be :

The correct option is C Possible at any temperatureΔG=ΔH−TΔSfor the given reaction, deltaH=−ve as it is exothermic, ΔS=+ve, then ΔG=ve. So, the reaction will be spontaneous at all temperatures.

A reaction, $A + B \to C + D + q$ ; is found to have a positive entropy change. The reaction will be :

The correct option is C Possible at any temperature
$Δ G = Δ H - T Δ S$
for the given reaction, $d e l t a H = - v e$ as it is exothermic, $Δ S = + v e$ , then $Δ G = v e$ . So, the reaction will be spontaneous at all temperatures.