How does Molarity change with temperature?
Example: 5 moles of solute in 1 liter of solution.
The Molarity at the beginning is (5moles ÷ 1Liter) = 5 M.
When the solution is warmed up and expanded by 1% say, to 1.01L, the new Molarity = (5moles ÷ 1.01Liter) = 4.95 M
P.S. All matter expands when temperature rises so if you're calculating the molarity of a solution, you may get different readings on a warm day compared to a freezing cold day!