question_answer

\[20\text{ }mL\]of \[x\text{ }M\text{ }HCl\]neutralises completely \[10\text{ }mL\]of \[0.1\text{ }M\text{ }NaHC{{O}_{3}}\]solution and a further \[5\text{ }mL\]of \[0.2\,M\,N{{a}_{2}}C{{O}_{3}}\] solution to methyl orange end point. The value of x is ______.

Answer:

0.15