Question

You are given two clear solutions of the same unknown monoprotic acid, but with different concentrations. Which statement is true?

		A smaller volume of the less concentrated solution contains the same number of moles of the acid compared to the more concentrated solution.
		The product of concentration and volume of the less concentrated solution equals the product of concentration and volume of the more concentrated solution.
		If the same volume of each sample was taken, then more base solution would be required to neutralize the one with lower concentration.
		There is no chemical method designed to tell the two solutions apart.
		It would take more base solution (per milliliter of the unknown solution) to neutralize the more concentrated solution.

Answer 1

Concentration is the number of moles per litre of the solution.

Concentration * volume = number of moles

Let both solutions have same vlume, then

More is the concentration, more is the number of moles for same volume of both the solutions. so, more base will required to neutralise the acid.

Hence , option 1, 2, 3 and 4 are incorrect.

Correct option is :

It would take more base solution (per milliliter of the unknown solution) to neutralize the more concentrated solution.