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Q.
$100\ ml$ of $HCl +35 \,ml$ of $NaOH$, colour of methyl orange in the solution will be:
Equilibrium
Solution:
When $100\,ml \,HCl$ is added to $35 \,mL\, NaOH , 35 \,mL$ $HCl$ is utilized to neutralise $NaOH$, while $65 \,mL \,HCl$ remains as such. Hence, the solution becomes acidic. In acid solution, the colour of methyl orange (indicator) is red due to the presence of $Me ^{+}$ ion as