Chemistry-
General
Easy

Question

In which of the following reactions the entropy change is positive?

  1. H subscript 2 end subscript plus fraction numerator 1 over denominator 2 end fraction O subscript 2 end subscript rightwards arrow H subscript 2 end subscript O    
  2. stack N a to the power of plus end exponent with left parenthesis g right parenthesis below plus stack C l to the power of minus end exponent with left parenthesis g right parenthesis below rightwards arrow stack N a C l with left parenthesis s right parenthesis below    
  3. stack N a C l with left parenthesis 1 right parenthesis below rightwards arrow stack N a C l with left parenthesis s right parenthesis below    
  4. stack H subscript 2 end subscript O with left parenthesis l right parenthesis below rightwards arrow stack H subscript 2 end subscript O with left parenthesis g right parenthesis below    

The correct answer is: stack H subscript 2 end subscript O with left parenthesis l right parenthesis below rightwards arrow stack H subscript 2 end subscript O with left parenthesis g right parenthesis below

Book A Free Demo

+91

Grade*

Related Questions to study

General
chemistry-

3 C a C O subscript 3 left parenthesis s right parenthesis end subscript rightwards arrow C a O subscript left parenthesis s right parenthesis end subscript plus C O subscript 2 left parenthesis g right parenthesis end subscript capital delta H equals plus 180 K J If entropies of limestone ,lime and carbon dioxide are 93,39 and 213 J/mol/K. Then capital delta S subscript t o t a l blank end subscript in JK–1 at 300K is

3 C a C O subscript 3 left parenthesis s right parenthesis end subscript rightwards arrow C a O subscript left parenthesis s right parenthesis end subscript plus C O subscript 2 left parenthesis g right parenthesis end subscript capital delta H equals plus 180 K J If entropies of limestone ,lime and carbon dioxide are 93,39 and 213 J/mol/K. Then capital delta S subscript t o t a l blank end subscript in JK–1 at 300K is

chemistry-General
General
chemistry-

The direct conversion of A to B is difficult. Hence it is carried out by the following shown path: capital delta S left parenthesis A rightwards arrow C right parenthesis equals 50 blank e. u. comma blank capital delta S left parenthesis C rightwards arrow D right parenthesis equals 30 blank e. t blank capital delta S left parenthesis B rightwards arrow D right parenthesis equals 20 e u . where e.u is entropy unitThen capital delta S left parenthesis A rightwards arrow B right parenthesis

The direct conversion of A to B is difficult. Hence it is carried out by the following shown path: capital delta S left parenthesis A rightwards arrow C right parenthesis equals 50 blank e. u. comma blank capital delta S left parenthesis C rightwards arrow D right parenthesis equals 30 blank e. t blank capital delta S left parenthesis B rightwards arrow D right parenthesis equals 20 e u . where e.u is entropy unitThen capital delta S left parenthesis A rightwards arrow B right parenthesis

chemistry-General
General
chemistry-

C subscript 6 end subscript H subscript 6 end subscript rightwards arrow C subscript 6 end subscript H subscript 12 end subscript capital delta H equals negative 204 K J 204 kjheat of hydrognentaion of each C=C bond in benzene

C subscript 6 end subscript H subscript 6 end subscript rightwards arrow C subscript 6 end subscript H subscript 12 end subscript capital delta H equals negative 204 K J 204 kjheat of hydrognentaion of each C=C bond in benzene

chemistry-General
General
chemistry-

Heat evolved in the reaction H subscript 2 end subscript plus C l subscript 2 end subscript rightwards arrow 2 H C l is 182kJ Bond energies H-H and Cl-Cl are 430 and 242kJ/mole.respectively Thus H-Cl- bond energy is

Heat evolved in the reaction H subscript 2 end subscript plus C l subscript 2 end subscript rightwards arrow 2 H C l is 182kJ Bond energies H-H and Cl-Cl are 430 and 242kJ/mole.respectively Thus H-Cl- bond energy is

chemistry-General
General
physics

What is the equation for a damped oscillator, where k and b are constants and  is  x displacement.

What is the equation for a damped oscillator, where k and b are constants and  is  x displacement.

physicsGeneral
General
physics-

In the given reaction blank subscript z X to the power of A not stretchy rightwards arrow subscript z plus 1 end subscript Y to the power of A not stretchy rightwards arrow subscript z minus 1 end subscript K to the power of A minus 4 end exponent not stretchy rightwards arrow subscript z minus 1 end subscript K to the power of A minus 4 end exponent radioactive radiation are emitted in the sequence

In the given reaction blank subscript z X to the power of A not stretchy rightwards arrow subscript z plus 1 end subscript Y to the power of A not stretchy rightwards arrow subscript z minus 1 end subscript K to the power of A minus 4 end exponent not stretchy rightwards arrow subscript z minus 1 end subscript K to the power of A minus 4 end exponent radioactive radiation are emitted in the sequence

physics-General
General
physics-

A hypothetical radioactive nucleus decays according to the following seriesblank subscript 72 A to the power of 180 not stretchy rightwards arrow with alpha on top A subscript 1 not stretchy rightwards arrow with beta to the power of minus on top A subscript 2 not stretchy rightwards arrow with alpha on top A subscript 3 not stretchy rightwards arrow with gamma on top A subscript 4 If the mass number and atomic number of A are respectively 180 and72. Then to atomic number and mass number of A will respectively be

A hypothetical radioactive nucleus decays according to the following seriesblank subscript 72 A to the power of 180 not stretchy rightwards arrow with alpha on top A subscript 1 not stretchy rightwards arrow with beta to the power of minus on top A subscript 2 not stretchy rightwards arrow with alpha on top A subscript 3 not stretchy rightwards arrow with gamma on top A subscript 4 If the mass number and atomic number of A are respectively 180 and72. Then to atomic number and mass number of A will respectively be

physics-General
General
physics-

In the given nuclear reaction represents blank subscript 92 U to the power of 238 not stretchy rightwards arrow with alpha on top blank subscript B T h to the power of A not stretchy rightwards arrow with beta on top subscript D P a to the power of C not stretchy rightwards arrow with e on top subscript 92 U to the power of 234

In the given nuclear reaction represents blank subscript 92 U to the power of 238 not stretchy rightwards arrow with alpha on top blank subscript B T h to the power of A not stretchy rightwards arrow with beta on top subscript D P a to the power of C not stretchy rightwards arrow with e on top subscript 92 U to the power of 234

physics-General
General
physics

The energy dissipated in a damped oscillation,

The energy dissipated in a damped oscillation,

physicsGeneral
General
physics

If the time period of undamped oscillation is T and that of damped oscillatin is , then T,what is the relation between I&.

If the time period of undamped oscillation is T and that of damped oscillatin is , then T,what is the relation between I&.

physicsGeneral
General
physics-

Four lowest energy levels of H-atom are shown in the figure. The number of possible emission lines would be

Four lowest energy levels of H-atom are shown in the figure. The number of possible emission lines would be

physics-General
General
physics

Complete the following sentence In a damped oscillation of a pendulum ..

Complete the following sentence In a damped oscillation of a pendulum ..

physicsGeneral
General
physics-

When a sample of solid lithium is placed in a flask of hydrogen gas then following reaction happened blank subscript 1 end subscript superscript 1 end superscript H plus blank subscript 3 end subscript L i to the power of 7 end exponent rightwards arrow blank subscript 2 end subscript H e to the power of 4 end exponent plus blank subscript 2 end subscript H e to the power of 4 end exponentThis statement is

The given reaction is a nuclear reaction, which can take place only if a proton (a hydrogen nucleus) comes into contact with a lithium nucleus. If the hydrogen is in the atomic from, the interaction between it’s electron cloud and the electron cloud of a lithium atom keeps the two nuclei from getting close to each other. Even if isolated protons are used, they must be fired at the L i atom with enough kinetic energy to overcome the electric repulsion between the proton and L i atom

When a sample of solid lithium is placed in a flask of hydrogen gas then following reaction happened blank subscript 1 end subscript superscript 1 end superscript H plus blank subscript 3 end subscript L i to the power of 7 end exponent rightwards arrow blank subscript 2 end subscript H e to the power of 4 end exponent plus blank subscript 2 end subscript H e to the power of 4 end exponentThis statement is

physics-General
The given reaction is a nuclear reaction, which can take place only if a proton (a hydrogen nucleus) comes into contact with a lithium nucleus. If the hydrogen is in the atomic from, the interaction between it’s electron cloud and the electron cloud of a lithium atom keeps the two nuclei from getting close to each other. Even if isolated protons are used, they must be fired at the L i atom with enough kinetic energy to overcome the electric repulsion between the proton and L i atom
General
physics

complete the following sentence.Time period of oscillating of a simple pendulum is dependent on...

complete the following sentence.Time period of oscillating of a simple pendulum is dependent on...

physicsGeneral
General
maths-

Let the eleven letters .....,K denote an arbitrary permutation of the integers (1, 2,.....11), then  left parenthesis A minus 1 right parenthesis left parenthesis B minus 2 right parenthesis left parenthesis C minus 3 right parenthesis horizontal ellipsis. left parenthesis K minus 11 right parenthesis

Given set of numbers is {1, 2,....11} in which 5 are even six are odd, which demands that in the given product it is not possible to arrange to subtract only even number from odd numbers. There must be at least one factor involving subtraction of an odd number form another odd number. So at least one of the factors is even. Hence product is always even

Let the eleven letters .....,K denote an arbitrary permutation of the integers (1, 2,.....11), then  left parenthesis A minus 1 right parenthesis left parenthesis B minus 2 right parenthesis left parenthesis C minus 3 right parenthesis horizontal ellipsis. left parenthesis K minus 11 right parenthesis

maths-General
Given set of numbers is {1, 2,....11} in which 5 are even six are odd, which demands that in the given product it is not possible to arrange to subtract only even number from odd numbers. There must be at least one factor involving subtraction of an odd number form another odd number. So at least one of the factors is even. Hence product is always even