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Molarity

Equal volumes...

Question

Equal volumes of 1 M HNO $_{3}$ and 1 M $H_{3} P O_{4}$ are neutralised by dilute NaOH solution. If x and y K.cals are the heats liberated in the neutralisation of HNO $_{3}$ and $H_{3} P O_{4}$ respectively, the relation between x and y (assume $H_{3} P O_{4}$ is completely ionised).

x = y

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x = 3 y

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3 x = y

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2 x = y

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Solution

The correct option is B $3 x = y$
$H_{3} P O_{4}$ has 3 moles of $H^{+}$ while $H N O_{3}$ has 1 mole of $H^{+}$
Therefore energy released in case of $H_{3} P O_{4} =$ 3 x energy released in case of $H N O_{3}$
$∴ y = 3 x$

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Similar questions

Equal volumes of 1M Hcl and $H_{2} S O_{4}$ are neutralised by 1M NaoH solution and x and y KJ/equivalent of heat are liberated, respectively. Which of the following relations is correct?

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are neutralized by dilute NaOH solution and

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Equal volumes of 1 M HNO3 and 1 M H3PO4 are neutralised by dilute NaOH solution. If x and y K.cals are the heats liberated in the neutralisation of HNO3 and H3PO4 respectively, the relation between x and y (assume H3PO4 is completely ionised).

The correct option is B 3x=yH3PO4 has 3 moles of H+ while HNO3 has 1 mole of H+ Therefore energy released in case of H3PO4= 3 x energy released in case of HNO3∴y=3x

Equal volumes of 1 M HNO $_{3}$ and 1 M $H_{3} P O_{4}$ are neutralised by dilute NaOH solution. If x and y K.cals are the heats liberated in the neutralisation of HNO $_{3}$ and $H_{3} P O_{4}$ respectively, the relation between x and y (assume $H_{3} P O_{4}$ is completely ionised).

The correct option is B $3 x = y$
$H_{3} P O_{4}$ has 3 moles of $H^{+}$ while $H N O_{3}$ has 1 mole of $H^{+}$
Therefore energy released in case of $H_{3} P O_{4} =$ 3 x energy released in case of $H N O_{3}$
$∴ y = 3 x$