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Salt of Strong Acid and Weak Base

Assertion: So...

Question

Assertion: Solution of $A l C l_{3}$ in water is neutral
Reason: $[A l (H_{2} O)_{6}]^{3 +}$ is formed

A

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

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B

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

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C

Assertion is correct but Reason is incorrect

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D

Assertion is incorrect but Reason is correct

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E

Both Assertion and Reason are incorrect

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Solution

The correct option is D Assertion is incorrect but Reason is correct
$A l C l_{3} + 3 H_{2} O \to A l (O H)_{3} + 3 H C l$ ,

$H C l$ is a strong acid, so it will dissociate in water to form $H^{+}$ . As a result of this reaction, the solution will be acidic, with a pH < 7.

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Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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Salt of Strong Acid and Weak Base

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