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Standard IX

Chemistry

Strong and Weak Acids and Bases

Assertion :1 ...

Question

Assertion :1 mole of phosphorous acid requires $80$ grams of sodium hydroxide for complete neutralisation. Reason: Phosphorous acid is a tribasic acid.

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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Assertion is incorrect but Reason is correct

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Solution

The correct option is C Assertion is correct but Reason is incorrect
$H_{3} P O_{3}$ , Phosphorous acid or Phosphonic acid is a diprotic acid.

Therefore, it requires $2$ moles $=$ $80$ g of $N a O H$ .

Option C is correct.

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Assertion :1 mole of phosphorous acid requires 80 grams of sodium hydroxide for complete neutralisation. Reason: Phosphorous acid is a tribasic acid.

The correct option is C Assertion is correct but Reason is incorrectH3PO3, Phosphorous acid or Phosphonic acid is a diprotic acid. Therefore, it requires 2 moles = 80 g of NaOH.Option C is correct.

Assertion :1 mole of phosphorous acid requires $80$ grams of sodium hydroxide for complete neutralisation. Reason: Phosphorous acid is a tribasic acid.

The correct option is C Assertion is correct but Reason is incorrect
$H_{3} P O_{3}$ , Phosphorous acid or Phosphonic acid is a diprotic acid.

Therefore, it requires $2$ moles $=$ $80$ g of $N a O H$ .

Option C is correct.