Download App

Chemical Thermodynamics — Chemistry STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryChemical Thermodynamics2 Marks
Question
State third law of thermodynamics. Give its two uses.
✓

Answer

The third law of thermodynamics states that, “The entropy of a perfectly ordered crystalline substance is zero at absolute zero of temperature”.
Usefulness :
(a) It helps in calculating thermodynamic properties.
(b) It is helpful in measuring chemical affinity.
(c) It is used to determine the absolute entropy of any substance either in solid, liquid or gaseous state at
any desired temperature.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following in one or two sentence." from Chemical Thermodynamics→Chemical Thermodynamics — all question types→Chemistry STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

What is the effect of temperature on solubility of gas in a liquid?
→
Why are atomic radii of noble gases larger than those of halogens?
→
Write any 'two' uses of each of the following:
$(a) \ H_2SO_4 \ (b)$ Chlorine
→
Explain denaturation of proteins.
→
Arrange the following amines in an increasing order of boiling points. n-propylamine, ethylmethyl amine, trimethylamine.
→
Write preparation of low density polythene.
→
Draw the simple Fischer projection formulae of D-(+)-glucose and D-(-)-fructose.
→
What is the action of following reagents on pent-3-enal?
  1. $H _2 / Ni$
  2. $LiAlH _4 / H _3 O ^{+}$
→
Benzaldehyde from benzene (Gattermann-Koch synthesis).###Write chemical equation for Gatter- mann-Koch formylation.
→
What is the action of p-toluene sulphonyl chloride on ethyl amine and diethyl amine?
→