Assertion The enthalpy of formation of gaseous oxygen molecules at 298 K and under a pressure of one atmosphere is zero. Reason The entropy of formation of gaseous oxygen molecule under the same conditions is zero.

Question

Assertion The enthalpy of formation of gaseous oxygen molecules at 298 K and under a pressure of one atmosphere is zero. Reason The entropy of formation of gaseous oxygen molecule under the same conditions is zero. (A) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion (B) If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion (C) If Assertion is true but Reason is false (D) If both Assertion and Reason are false

Tardigrade Admin · Accepted Answer

Standard enthalpy of formation of gaseous oxygen molecule is zero. Entropy of formation of even elementary substances at 298 K and one atmosphere is not zero.

Q. Assertion The enthalpy of formation of gaseous oxygen molecules at $298 K$ and under a pressure of one atmosphere is zero.
Reason The entropy of formation of gaseous oxygen molecule under the same conditions is zero.

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion

If Assertion is true but Reason is false

If both Assertion and Reason are false

Standard enthalpy of formation of gaseous oxygen molecule is zero.
Entropy of formation of even elementary substances at $298 K$ and one atmosphere is not zero.

Q. Assertion The enthalpy of formation of gaseous oxygen molecules at 298K and under a pressure of one atmosphere is zero. Reason The entropy of formation of gaseous oxygen molecule under the same conditions is zero.