Home
Class 11
CHEMISTRY
Predict which of the following reaction(...

Predict which of the following reaction(s) has a negative entropy change?
`I. CH_(4)(g) +2O_(2)(g)rarrCO_(2)(g)+2H_(2)O(l)`
`II. NH_(3)(g)+HCl(g)rarrNH_(4)Cl(s)`
`III. 2KClO_(4)(s) rarr2KClO_(3)(s)+O_(2)(g)`

A

III

B

II

C

I and II

D

I

Text Solution

Verified by Experts

The correct Answer is:
C
`Deltan_(g)=-ve," "DeltaS=-ve`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    NARENDRA AWASTHI|Exercise Level 1 (Q.1 To Q.30)|6 Videos

  • THERMODYNAMICS

    NARENDRA AWASTHI|Exercise Level 1 (Q.31 To Q.60)|2 Videos

  • STOICHIOMETRY

    NARENDRA AWASTHI|Exercise Level 3 - Subjective Problems|20 Videos

Similar Questions

Explore conceptually related problems

Predict which of the following reaction (s) has a positive entropy change? I . Ag^(+)(aq)+Cl^(-)(aq)rarrAgCl(s) II . NH_(4)Cl(s)rarrNH_(3)(g)+HCl(g) III . 2NH_(3)(g)rarrN_(2)+3H_(2)(g)

Predict which of the following reaction(s) has a positive entropy change? I" " Ag^(+) (aq) + CI^(-) (aq) rarr AgCI (s) I" "NH_(4)CI (s) rarr NH_(3)(g) + HCI (g) III" " 2NH_(3)(g) rarr N_(2)(g)+ 3H_(2)(g) IV " "2NH_(3) rarr N_(2)(g) + 3H_(2)(g)

Predict which of the following reactions have positive entropy changes. (a) NH_(3(g))+HCl_((g))rarrNH_(4)Cl_((s)) (b) Cu_((aq))^(+2)+S_((aq))^(-2)rarrCuS_((s)) (c ) NH_(2)COONH_(4(s))rarr2NH_(3(g))+CO_(2(g)) (d) Condensation of water

Determine which of the following reactions at constant pressure represents surroundings that do work on the system: I. 4NH_(3)(g)+7O_(2)(g)rarr4NO_(2)(g)+6H_(2)O(g) II. CO(g)+2H_(2)(g)rarrCH_(3)OH(l) III. C(s,"graphite")+H_(2)O(g)rarrCO(g)+H_(2)(g) IV. H_(2)OrarrH_(2)O(l)

What conclusion can be drawn from the following reactions about the nature of oxides? (1) 4Na(s) + O_2(g)rarr 2Na_(2)O(s); Na_(2)O(s) + H_(2)O(l) rarr 2NaOH(aq) (2) S(s) + O_2(g)rarr SO_(2)(g); SO_(2)(g) + H_(2)O(l) rarr H_(2)SO_(4)(aq)