A student left 40.0 mL of a bottle of 12.0 M HCl out overnight.The next morning,the bottle has only 35.7 mL of liquid left.Assuming that the volume change is only due to loss of water,what will be the molarity if the remaining solution is diluted to 150 mL?
A)6.0 M
B)2.86 M
C)3.20 M
D)12.0 M

Question

Quizplus · Accepted Answer

The initial moles of HCl remain the same, so (12.0 M)(40.0 mL) = (x M)(150 mL). Solving for x gives 3.20 M.

A Student Left 40