<p>In which of the following reactions, standard reaction entropy change&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mrow><mo>&#8710;</mo><msup><mi>S</mi><mo>&#8728;</mo></msup></mrow></mfenced></math>&nbsp;is positive and standard Gibbs energy change&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mrow><mo>&#8710;</mo><msup><mi>G</mi><mo>&#8728;</mo></msup></mrow></mfenced></math>&nbsp;decreases sharply with increasing temperature?</p>