What molar quantity of HCl is there in a 24.38*mL volume of an aqueous solution that is 0.100*mol*L^-1 with respect to HCl?

1 Answer
Apr 25, 2017

Approx. 25xx10^-4*mol.

Explanation:

We use the relationship:

"Concentration" = "Moles of solute"/"Volume of solution",

And typically, because we often use units of "litres" to express volume, "concentration" has units "moles"*"L"^-1.

And thus to assess the number of moles in a 24.38*mL volume of 0.100*mol*L^-1 HCl, we simply assess the product:

"Moles of solute" = "Concentration "xx" volume"

=24.38xx10^-3*cancelLxx0.100*mol*cancel(L^-1)=24.38xx10^-4*mol.

And we need an equimolar quantity of NaOH to neutralize this molar quantity.