What is the concentration of an HCl solution if 25.0 mL of the solution is neutralizedcompletely by 40.0 mL of a 0.30 M KOH solution?

Question

Quizplus · Accepted Answer

The balanced chemical equation for the neutralization reaction between HCl and KOH is:

HCl(aq) + KOH(aq) -> KCl(aq) + H2O(l)

From the equation, we can see that the stoichiometric ratio of HCl to KOH is 1:1. This means that the moles of HCl in the solution is equal to the moles of KOH used to neutralize it.

First, we need to calculate the number of moles of KOH used:

moles KOH = M x V = 0.30 M x 0.040 L = 0.012 mol

Since the stoichiometric ratio of HCl to KOH is 1:1, the number of moles of HCl present in the solution is also 0.012 mol.

Now, we can calculate the concentration of the HCl solution:

M = moles HCl / volume of solution (in L)
M = 0.012 mol / 0.025 L = 0.48 M

Therefore, the concentration of the HCl solution is 0.48 M. The answer is (D).

What Is the Concentration of an HCl Solution If 25