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Concentration Terms

The enthalpy ...

Question

The enthalpy of KNO $_{3}$ is 36.5 kcal. In this reaction _________.

energy is liberated

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energy is absorbed

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K N O_{3}

is stable

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K N O_{3}

is unstable

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Solution

The correct option is A energy is absorbed
$Δ H_{reaction} =$ 36.5 kcal.
Since $Δ H$ is + ve, therefore, it is an endothermic reaction.
Energy absorbed during a reaction in an endothermic reaction.

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{K N O}_{3}

100 {c m}^{3}

{K N O}_{3}

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U = 2 x^{3} - 3 x^{2}

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