Test Index

Thermodynamics

Section: Chemistry

© examsnet.com

Question : 33 of 34

Marks: +1, -0

Identify the incorrect statements from the following

\Delta S_{\text{system}} = (\Delta S_{\text{total}} + \Delta S_{\text{sur}})

\;\; A(l) \longrightarrow A(s)

; for this process entropy change decreases

III. Entropy units are

\mathrm{J}\,\mathrm{K}\,\mathrm{mol}^{-1}

[AP EAPCET 18 May 2024 Shift 1]

I. III only
I, II only
I, II, III
II, III only

Solution:

Statement I and statement III are incorrect, while statement II is correct. The corrections for the incorrect statements are as follows:

The total entropy change that accompanies a process is given by:

\Delta S_{\text{total}} = \Delta S_{\text{system}} + \Delta S_{\text{surrounding}}

The Sl units of entropy are

\mathrm{J}\,\mathrm{K}^{-1}\,\mathrm{mol}^{-1}

or

\mathrm{J}\,\mathrm{K}^{-1}

.

© examsnet.com

Go to Question:

Prev Question

Next Question