Question

For an endothermic reaction:
(A) \( q_p \) is negative.
(B) \( \Delta_rH \) is positive.
(C) \( \Delta_rH \) is negative.
(D) \( q_p \) is positive.
Choose the correct answer from the options given below:

• A. B and D
• B. C and D
• C. A and B
• D. A and C

Answer 1

The Correct Option is A

For an endothermic reaction:
∆rH is positive: Endothermic reactions absorb heat from the surroundings, resulting in a positive change in enthalpy (∆H).
\(q_p\) is positive: At constant pressure (denoted by the subscript p), the heat absorbed by the system (\(q_p\)) is equal to the change in enthalpy (∆H). Since ∆H is positive for an endothermic reaction, \(q_p\) is also positive.
Therefore, the correct statements are B and D.