Question

What is the molarity of a 250.0 milliliter aqueous solution of sodium hydroxide that contains 15.5 grams of solute?

Answer 1

`[NaOH(aq)] = 1.55` `mol*L^-1`.

Explanation:

`"Molarity"` `=` `"Moles of solute (moles)"/"Volume of solution (Litres)"` `=` `((15.5*g)/(40.0*g*mol^-1))/(0.2500*L)` `=` `??` `mol*L^-1`