मराठी

Match the following processes with entropy change: Reaction Entropy change (i) A liquid vapourises (a) ∆S = 0 (ii) Reaction is non-spontaneousat all temperatures and ∆His positive (b) ∆S = posit - Chemistry

Advertisements
Advertisements

प्रश्न

Match the following processes with entropy change:

Reaction Entropy change
(i) A liquid vapourises (a) ∆S = 0
(ii) Reaction is non-spontaneous
at all temperatures and ∆H
is positive
(b) ∆S = positive
(iii) Reversible expansion of an ideal gas (c) ∆S = negative
जोड्या लावा/जोड्या जुळवा

उत्तर

Reaction Entropy change
(i) A liquid vapourises (b) ∆S = positive
(ii) Reaction is non-spontaneous
at all temperatures and ∆H
is positive
(c) ∆S = negative
(iii) Reversible expansion of an ideal gas (a) ∆S = 0
shaalaa.com
Spontaneity - Entropy and Spontaneity
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 6: Thermodynamics - Multiple Choice Questions (Type - I) [पृष्ठ ७६]

APPEARS IN

एनसीईआरटी एक्झांप्लर Chemistry [English] Class 11
पाठ 6 Thermodynamics
Multiple Choice Questions (Type - I) | Q 52 | पृष्ठ ७६

संबंधित प्रश्‍न

A reaction, A + B → C + D + q is found to have a positive entropy change. The reaction will be ______.


For the reaction, \[\ce{2Cl_{(g)} → Cl_{2(g)}}\], what are the signs of ΔH and ΔS?


The entropy change can be calculated by using the expression ∆S = `q_(rev)/T`. When water freezes in a glass beaker, choose the correct statement amongst the following :


The spontaneity means, having the potential to proceed without the assistance of external agency. The processes which occur spontaneously are:

(i) Flow of heat from colder to warmer body.

(ii) Gas in a container contracting into one corner.

(iii) Gas expanding to fill the available volume.

(iv) Burning carbon in oxygen to give carbon dioxide.


Enthalpy diagram for a particular reaction is given in figure. Is it possible to decide spontaneity of a reaction from given diagram. Explain.


Assertion (A): A liquid crystallises into a solid and is accompanied by decrease in entropy.

Reason (R): In crystals, molecules organise in an ordered manner.


For a sample of perfect gas when its pressure is changed isothermally from Pi to Pf, the entropy change is given by ______.


For the irreversible expansion of an ideal gas under isothermal conditions, the correct option is ______.


The process with negative entropy change is ______.


A reaction at 1 bar is non-spontaneous at low temperatures but becomes spontaneous at high temperatures. Identify the correct statement about the reaction among the following.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×