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Chemistry-

General

Easy

Question

What is necessary condition for spontaneity of a process?

$∆$ S >O
$∆$ E <O
$∆$ H <O
$∆$ G< O

The correct answer is: $increment$ G< O

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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

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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

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

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

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Which of the following is not correct

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

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$C subscript text graphite end text end subscript plus O subscript 2 left parenthesis g right parenthesis end subscript rightwards arrow C O subscript 2 left parenthesis g right parenthesis end subscript semicolon capital delta H equals negative 393.5 K J$ $increment$ 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

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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

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Identify the reaction in which the heat liberated corresponds to the heat of formation ( $increment$ H) :

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For the gaseous reaction involving the complete combustion of isobutane

For the gaseous reaction involving the complete combustion of isobutane

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In an adiabatic expansion of ideal gas :

In an adiabatic expansion of ideal gas :

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