Chemistry-
General
Easy

Question

Change in entropy is negativfor–

  1. Bromine(l)→Bromine(g)    
  2. C(s)+H2O(g)→CO(g)+H2(g)    
  3. N2(g,10atm) →N2(g,1atm)    
  4. Fe(at400K) →Fe(at300K)    

The correct answer is: Fe(at400K) →Fe(at300K)

Book A Free Demo

+91

Grade*

Related Questions to study

General
chemistry-

The enthalpychange(DH) forthereaction,N2(g) +3H2(g) 3/4 →2NH3(g)is92.38KJat 298K.TheinternalenergychangeDUat298Kis-

The enthalpychange(DH) forthereaction,N2(g) +3H2(g) 3/4 →2NH3(g)is92.38KJat 298K.TheinternalenergychangeDUat298Kis-

chemistry-General
General
chemistry-

For a phase changH2O(l)  H2O(s)M

For a phase changH2O(l)  H2O(s)M

chemistry-General
General
chemistry-

Thabsolutenthalponeutraiatioothe reaction: MgO(s)+2HCl(aq)3/4→MgCl2(aq)+H2O(l) wilbe-

Thabsolutenthalponeutraiatioothe reaction: MgO(s)+2HCl(aq)3/4→MgCl2(aq)+H2O(l) wilbe-

chemistry-General
General
chemistry-

Fowhiconothfollowinequationis Dreaction equal to DH° for thproduct-

Fowhiconothfollowinequationis Dreaction equal to DH° for thproduct-

chemistry-General
General
maths-

When a die is rolled twice, if the event of getting an even number is denoted by a success and the number of successes as a random variable, then distribution and mean of the variate are

When a die is rolled twice, if the event of getting an even number is denoted by a success and the number of successes as a random variable, then distribution and mean of the variate are

maths-General
General
chemistry-

EnthalpoCH4+ fraction numerator 1 over denominator 2 end fractionO2→CH3OinegativeIenthalpocombustiooCHanCH3Oare x and y respectivelyThewhicrelatiois correct-

EnthalpoCH4+ fraction numerator 1 over denominator 2 end fractionO2→CH3OinegativeIenthalpocombustiooCHanCH3Oare x and y respectivelyThewhicrelatiois correct-

chemistry-General
General
chemistry-

Changienthalpforeaction 2H2O2(l) → 2H2O(l)+O2(g) If heaoformatiooH2O(lanH2(l)are– 188&286KJ/morespectively

Changienthalpforeaction 2H2O2(l) → 2H2O(l)+O2(g) If heaoformatiooH2O(lanH2(l)are– 188&286KJ/morespectively

chemistry-General
General
chemistry-

For there action C2H5OH(l)+3O2(g)→2CO2(g)+3H2O(l) Which one istrue -

For there action C2H5OH(l)+3O2(g)→2CO2(g)+3H2O(l) Which one istrue -

chemistry-General
General
chemistry-

2Zn+O2 3/2 →2ZnODG°=616J 2Zn+S2→2ZnSDG°=–293J S2+2O2 3/4 →2SO2DG°=408J DG°forthefollowingreactionis-2ZnS+3O2 3/4 →2ZnO+2SO

2Zn+O2 3/2 →2ZnODG°=616J 2Zn+S2→2ZnSDG°=–293J S2+2O2 3/4 →2SO2DG°=408J DG°forthefollowingreactionis-2ZnS+3O2 3/4 →2ZnO+2SO

chemistry-General
General
Maths-

A random variable has the following distribution.

Then for the values, A = K, B = Mean, C = Variance, the ascending order is

A random variable has the following distribution.

Then for the values, A = K, B = Mean, C = Variance, the ascending order is

Maths-General
General
chemistry-

Thheaocombustiooethanolinbomb calorimeteris–670.48Kcalmol1at25°C.Whatis DE at 25°C fothreaction?

Thheaocombustiooethanolinbomb calorimeteris–670.48Kcalmol1at25°C.Whatis DE at 25°C fothreaction?

chemistry-General
General
Maths-

A random variable X has the following distribution

The value of k and P(X<3) are equal to

A random variable X has the following distribution

The value of k and P(X<3) are equal to

Maths-General
General
maths-

If m and 2 s are the mean and variance of the random variable X, whose distribution is given by

If m and 2 s are the mean and variance of the random variable X, whose distribution is given by

maths-General
General
Maths-

The distribution of a random variable X is given below

The value of k is

The distribution of a random variable X is given below

The value of k is

Maths-General
General
maths-

The number of different triangles formed by joining the points A, B, C, D, E, F and G as shown in the figure given below is

No. of different triangles equals 7 subscript C subscript 3 end subscript end subscript minus 5 subscript C subscript 3 end subscript end subscript minus 3 subscript C subscript 3 end subscript end subscript equals 24

The number of different triangles formed by joining the points A, B, C, D, E, F and G as shown in the figure given below is

maths-General
No. of different triangles equals 7 subscript C subscript 3 end subscript end subscript minus 5 subscript C subscript 3 end subscript end subscript minus 3 subscript C subscript 3 end subscript end subscript equals 24