Statement(I) : 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 indicator.
Statement(II) : Two moles of HCl are required for the complete neutralisation of one mole of ${Na}_{2} {CO}_{3}$

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Both Statement 1 and Statement 2 are true

Statement 1 is true and Statement 2 is false .

Statement 1 is false and Statement 2 is true.

Both Statement 1 and Statement 2 are false.

answer is A.

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Detailed Solution

$\begin{array}{l} {Na}_{2} {CO}_{3} + 2 HCl \to 2 NaCl + H_{2} O + {CO}_{2}, \\ phenolphathalein is used for \\ {Na}_{2} {CO}_{3} + HCl \to {NaHCO}_{3} + NaCl \end{array}$

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