Final answer:
To find the concentration of the acid, we can use the equation: moles of acid = moles of alkali. Given that the volume of the alkali is 15 mL and the concentration is 0.2 N, we can calculate the moles of alkali. Since the moles of acid and alkali are equal when they neutralize each other, the concentration of the acid is also 0.003 moles divided by the volume of the acid.
Step-by-step explanation:
To find the concentration of the acid, we can use the equation:
moles of acid = moles of alkali
First, we need to find the moles of alkali. The formula to calculate moles of a solution is:
moles = concentration (N) * volume (in liters)
Given that the volume of the alkali is 15 mL and the concentration is 0.2 N, we can calculate the moles of alkali.
moles of alkali = 0.2 N * 0.015 L = 0.003 moles
Since the moles of acid and alkali are equal when they neutralize each other, the concentration of the acid is also 0.003 moles divided by the volume of the acid.