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Title: How do you calculate the molarity of a solution? Post by: michele12 on Feb 14, 2013 What is the molarity of a solution that contains 0.40 moles of KBr in 0.5 liters of solution?
My teacher gave us the conversions but didn't give us examples to work on so I don't understand it. Any help is appreciated. Thanks in advance. Under "L of solution," she wrote "concentration or molarity: # mol - solute/1 L - solution" What does that mean? =/ Title: How do you calculate the molarity of a solution? Post by: micheley71 on Feb 14, 2013 molarity is the number of moles of a substance divided by the total liters of solution.
.4 moles of KBr divided by .5L = .8M solution Title: How do you calculate the molarity of a solution? Post by: toryz79 on Feb 14, 2013 Moles/liters = molarity!
divide 0.4/0.5 when asking for molarity always use moles over liters~! Title: How do you calculate the molarity of a solution? Post by: toshiroumezawa on Feb 14, 2013 Molarity: It is the no. of solute molecules present in a unit volume of solution.
Here it is. 0.4 moles of solute in 0.5 lit. of solution or 0.8 moles of solute in 1.0 lit. of solution (simply, multiply d abv eqn. to make the vol. of soln. unity) So, 0.8M. |