What volume of 0.15 M HCl(aq)must be diluted to make 2.0 L of 0.050 M HCl(aq)?

Question

Quizplus · Accepted Answer

Use the dilution formula: 
M1V1 = M2V2 
where 
M1 = 0.15 M (initial concentration) 
V1 = volume of initial solution (unknown) 
M2 = 0.050 M (final concentration) 
V2 = 2.0 L (final volume)

Rearranging the formula: 
V1 = (M2V2)/M1 = (0.050 M)(2.0 L)/(0.15 M) = 0.67 L

Therefore, 0.67 L of the 0.15 M HCl solution must be diluted to make 2.0 L of 0.050 M HCl solution.

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