ReasonSolubility of any salt in water may be endothermic or exothermic.AssertionWhen a salt is dissolved in water, the temperature of solution decreases. (2024)

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Standard XI

Chemistry

Internal Energy as a State of System

Question

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

Assertion is correct but Reason is incorrect

Both Assertion and Reason are incorrect

Correct option is D. Both Assertion and Reason are incorrect

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Assertion :The value of K for a reaction may increase or decrease with increase in temperature depending upon whether the reaction is exothermic or endothermic. Reason: With increase in temperature, the extent of reaction increases.

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Salt can be separated from its solution (salt dissolved in water) because

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Question 5

Salt can be separated from its solution (salt dissolved in water) because
(a) mixing of salt in water is a change that can be reversed by heating and melting of salt
(b) mixing of salt in water is a change that cannot be reversed
(c) mixing of salt in water is a permanent change
(d) mixing of salt in water is a change that can be reversed by evaporation

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50 g of common salt is added to 100 g of water at 20 ℃. Observe the solution given below and fill in the blanks. (Solubility of salt in 100 g water is 36 g at 20 ℃)

a) The salt solution is ___________.

b) The undissolved salt can be dissolved by _________ the temperature.

c) The undissolved salt can be separated by ___________.

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A salt gives an acidic solution when dissolved in water. The salt is formed from-

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