Question

The enthalpy of formation of two compounds A and B are – 84 kJ and -156 kJ respectively. Which of the following statements is correct?
a) A and B are endothermic compounds
b) A is more stable than B
c) A is less stable than B
d) Both A and B are unstable.​

Answer 1

Answer:

c). A is less stable than B

Explanation:

Negative enthalpy of formation of compounds represent exothermic reaction. The more energy is released while formation of a compound, the more stable it becomes

i.e. enthalpy of formation is inversely proportional to stability of compound

more less it goes , more stability it attains.

therefore the least enthalpy given here is of B that means B is more stable.

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Answer 2

Answer:

Option c A is less than stable B .

Hope it helps u mate