OnlineCBT
Chemistry · THERMODYNAMICS
हिन्दीGiven below are two statements: Statement I: For an endothermic reaction, the total enthalpy of products is greater than the total enthalpy of reactants (\( H_p > H_r \)). Statement II: If a chemical reaction is spontaneous, it must necessarily proceed at a measurable, perceptible rate. In the light of the above statements, choose the most appropriate answer from the options given below:
Correct answer · Option 2
Statement I is correct but Statement II is incorrect.
Explanation
For an endothermic reaction \( \Delta H = H_p - H_r > 0 \), so \( H_p > H_r \) (Statement I is correct). Spontaneity means having the potential to proceed, but does not provide information about the reaction rate, which may be exceedingly slow (Statement II is incorrect).
