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750 ml of 20M HCl is mixed with 250 ml of 60M HCl What is the new molarity?
Wiki User
∙ 14y ago
Molarity of a solution is the number of moles of the solute divided by the volume of the solution (in liters). If 750 ml of 20M HCl is mixed with 250 ml of 60M HCl, we first find the total number of moles of HCl in our new solution. Using that same formula, M=moles/V, we cansee that moles=MV. In the first solution we have (20M)(0.750L) = 15 moles. In the second, (60M)(0.250L) = 15 moles, so we have a total of 30 moles in our new solution, which also has a volume of 750mL + 250mL = 1L.
The molarity of the new solution is 30 moles/1L = 30M
Wiki User
∙ 14y ago
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