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Standard VIII

Chemistry

Reaction of Metals with Acids

Assertion :Co...

Question

Assertion :Concentrated and not dilute $H_{2} S O_{4}$ -behaves as a dehydrating agent. Reason: Concentrated sulphuric acid behaves as a strong dehydrating agent as the hydration reaction is highly exothermic. It has strong affinity for water removing water molecules from other compounds

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Concentrated sulphuric acid behaves as a strong dehydrating agent as the hydration reaction is highly exothermic. It has strong affinity for water removing water molecules from other compounds.
It has a strong oxidising property as when it reacts with metals produces sulphur dioxide,water and sulphate ions while dilute sulphuric acid produces hydrogen and salt.

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Assertion :Concentrated and not dilute H2SO4 -behaves as a dehydrating agent. Reason: Concentrated sulphuric acid behaves as a strong dehydrating agent as the hydration reaction is highly exothermic. It has strong affinity for water removing water molecules from other compounds

Assertion :Concentrated and not dilute $H_{2} S O_{4}$ -behaves as a dehydrating agent. Reason: Concentrated sulphuric acid behaves as a strong dehydrating agent as the hydration reaction is highly exothermic. It has strong affinity for water removing water molecules from other compounds