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Assertion: In the titration of `Na_(2)CO_(3)` with `HCl` using methyl orange indicator, the volume of acid required is twice that of the acid required using phenolphthalein as indicaton. Reason: Two moles of `HCl` are required for the complete neutralisation of one mole of `Na_(2)CO_(3)`.A. Statement I is true, Statement II is true, Statement II is the correct explanation of Statement I.B. Statement I true, Statement II is true, Statement II is not the correct explanation of Statement I.C. Statement I is true, Statement II is falseD. Statement I is false, Statement II is true. |
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Answer» Correct Answer - B Both assertion and reason are factually true but the reason does not exactly explain the assertion. The correct explanation is, methyl orange and phenolphthalein changes their colour at different `pH`. |
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