Some Basic Concepts of Chemistry - Result Question 26

Assertion and Reason

Read the following questions and answer as per the direction given below :

(a) Statement I is true; Statement II is true; Statement II is the correct explanation of Statement I.

(b) Statement I is true; Statement II is true; Statement II is not the correct explanation of Statement I.

(c) Statement I is true; Statement II is false.

(d) Statement I is false; Statement II is true.

26. Statement I

In the titration of $Na _2 CO _3$ with $HCl$ using methyl orange indicator, the volume required at the equivalence point is twice that of the acid required using phenolphthalein indicator.

Statement II Two moles of $HCl$ are required for the complete neutralisation of one mole of $Na _2 CO _3$.

(1991, 2M)