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Chemistry-

General

Easy

Question

For the process Dry ice →CO₂(g)

$∆$ H is positive and $∆$ S are negative
Both $∆$ H and $∆$ S are negative
Both $∆$ H and $∆$ S are positive
$∆$ H is negative whereas $∆$ S is positive

The correct answer is: Both $increment$ H and $increment$ S are positive

Related Questions to study

An equilibrium reaction $X plus Y rightwards arrow blank W plus Z$ $increment$ H =+ve is spontaneous in the forward direction Then corresponding sign of $increment$ G and $increment$ S should be respectively

An equilibrium reaction $X plus Y rightwards arrow blank W plus Z$ $increment$ H =+ve is spontaneous in the forward direction Then corresponding sign of $increment$ G and $increment$ S should be respectively

chemistry-General

Based on the third law of thermodynamics; the entropy can be obtained using the equation

Based on the third law of thermodynamics; the entropy can be obtained using the equation

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What is necessary condition for spontaneity of a process?

What is necessary condition for spontaneity of a process?

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$H subscript left parenthesis a q right parenthesis end subscript superscript plus end superscript plus O H subscript left parenthesis a q right parenthesis end subscript superscript minus end superscript rightwards arrow H subscript 2 end subscript O subscript left parenthesis 1 right parenthesis end subscript semicolon capital delta H equals negative v e$ and $increment$ G= -ve then the reaction is

$H subscript left parenthesis a q right parenthesis end subscript superscript plus end superscript plus O H subscript left parenthesis a q right parenthesis end subscript superscript minus end superscript rightwards arrow H subscript 2 end subscript O subscript left parenthesis 1 right parenthesis end subscript semicolon capital delta H equals negative v e$ and $increment$ G= -ve then the reaction is

chemistry-General

$2 H subscript 2 left parenthesis g right parenthesis end subscript plus O subscript 2 left parenthesis g right parenthesis end subscript rightwards arrow 2 H subscript 2 end subscript O subscript left parenthesis 1 right parenthesis end subscript$ and $increment$ G = -ve Then the reaction is

$2 H subscript 2 left parenthesis g right parenthesis end subscript plus O subscript 2 left parenthesis g right parenthesis end subscript rightwards arrow 2 H subscript 2 end subscript O subscript left parenthesis 1 right parenthesis end subscript$ and $increment$ G = -ve Then the reaction is

chemistry-General

A process is spontaneous at all temperatures when

A process is spontaneous at all temperatures when

chemistry-General

parallel

Which of the following process has negative value of $increment$ S?

Which of the following process has negative value of $increment$ S?

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False statement regarding second law of thermodynamics

False statement regarding second law of thermodynamics

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1st law does not tell about

1st law does not tell about

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parallel

Heat of reaction ( $increment$ H) is given by

Heat of reaction ( $increment$ H) is given by

chemistry-General

Which of the following is not correct

Which of the following is not correct

chemistry-General

$M g S O subscript 4 left parenthesis s right parenthesis end subscript plus a q times rightwards arrow M g S O subscript 4 left parenthesis a q right parenthesis end subscript capital delta H equals negative 84 K blank text cals end text$ , $increment$ H of the reaction is known as

$M g S O subscript 4 left parenthesis s right parenthesis end subscript plus a q times rightwards arrow M g S O subscript 4 left parenthesis a q right parenthesis end subscript capital delta H equals negative 84 K blank text cals end text$ , $increment$ H of the reaction is known as

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For the following reaction $H subscript left parenthesis a q right parenthesis end subscript superscript plus end superscript plus O H subscript left parenthesis a q right parenthesis end subscript superscript minus end superscript rightwards arrow H subscript 2 end subscript O subscript left parenthesis 1 right parenthesis end subscript semicolon capital delta H equals negative Q comma$ Where $increment$ H represents

For the following reaction $H subscript left parenthesis a q right parenthesis end subscript superscript plus end superscript plus O H subscript left parenthesis a q right parenthesis end subscript superscript minus end superscript rightwards arrow H subscript 2 end subscript O subscript left parenthesis 1 right parenthesis end subscript semicolon capital delta H equals negative Q comma$ Where $increment$ H represents

chemistry-General

$C subscript text graphite end text end subscript plus O subscript 2 left parenthesis g right parenthesis end subscript rightwards arrow C O subscript 2 left parenthesis g right parenthesis end subscript semicolon capital delta H equals negative 393.5 K J$ $increment$ H of the above reaction cannot be

$C subscript text graphite end text end subscript plus O subscript 2 left parenthesis g right parenthesis end subscript rightwards arrow C O subscript 2 left parenthesis g right parenthesis end subscript semicolon capital delta H equals negative 393.5 K J$ $increment$ H of the above reaction cannot be

chemistry-General

The enthalpy of the reaction $H subscript 2 left parenthesis g right parenthesis end subscript plus fraction numerator 1 over denominator 2 end fraction O subscript 2 left parenthesis g right parenthesis end subscript rightwards arrow H subscript 2 end subscript O subscript left parenthesis g right parenthesis end subscript$ is $increment$ H₁ and that of $H subscript 2 left parenthesis g right parenthesis end subscript plus fraction numerator 1 over denominator 2 end fraction O subscript 2 left parenthesis g right parenthesis end subscript rightwards arrow H subscript 2 end subscript O subscript left parenthesis l right parenthesis end subscript$ is $increment$ H₂ Then

The enthalpy of the reaction $H subscript 2 left parenthesis g right parenthesis end subscript plus fraction numerator 1 over denominator 2 end fraction O subscript 2 left parenthesis g right parenthesis end subscript rightwards arrow H subscript 2 end subscript O subscript left parenthesis g right parenthesis end subscript$ is $increment$ H₁ and that of $H subscript 2 left parenthesis g right parenthesis end subscript plus fraction numerator 1 over denominator 2 end fraction O subscript 2 left parenthesis g right parenthesis end subscript rightwards arrow H subscript 2 end subscript O subscript left parenthesis l right parenthesis end subscript$ is $increment$ H₂ Then

chemistry-General

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