Question

13. When the substances are at any temperature and when their
activity is equal to one is known as
(a) standard enthalpies
(b) standard state
(c) heat capacity
(d) molar heat capacity​

Answer 1

Solution:

When the substances are at any temperature and when their activity is equal to one is known as heat capacity.

Explanation:

1. Heat capacity refers to the amount of energy needed to increase a unit mass of the substance through specified temperature intervals.
2. it is also known specific heat of any substance.
3. The amount of energy required to increase the temperature of a body one degree alters depending upon the restraints inflicted.
4. Hence, option c is correct which is heat capacity.

Answer 2

Answer:

standard enthalpies

Explanation:

standard enthalpies