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The sign of delta H is positive. Increasing the temperature will: A. Increase extent and reaction...

The sign of delta H is positive. Increasing the temperature will:

A. Increase extent and reaction rate

B. Decrease extent and reaction rate

C. decrease extent and increase reaction rate

D. increase extent and decrease reaction rate

Science   Chemistry   
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Answer #1

If the sign of ∆H is positive it means it is an endothermic reaction and as the reaction proceeds Temperature falls due to absorption of heat.

Hence by Le chattliers principle if the temperature is increased then the reaction will move in that direction in which the temperature will fall to minimise the effect of change . Hence the reaction will move in forward direction i.e the extent of reaction will increase . Also with increase in temperature the reaction rate increases , which can be clearly observed from Arrhenius equation.

Therefore the correct option is A. I.e increase extent and reaction rate.

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