What is the concentration when 225ml of 0.3M KOH is added to 125ml of 0.55M KOH?
submitted: Feb 28, 2018 responded: Mar 01, 2018
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Chi Luong ()
you can calculate mole of each solution basing on concentration formula n = MxV (exchange the unit to L) and sum them up, then divided by sum of volume (in L).
Jay Dosunmu (admin)
Since molarity is the number of moles of solute per liter of solution, a straightforward way to solve this problem would be to convert the given numbers into their ratio forms, e.g. .0675 mol / .225 L and 0.06875 mol / .125 L and then add the moles and liters together. You will get a new ratio in the form of: (mol1 + mol2)/(L1 + L2) which will give you your new molarity.
I hope that helps, and let us know if you have any more questions :)