To 225mL of a 0.80M solution of KI, a student adds enough water to make 1.0 L of a more dilute KI solution. What is the morality of the new solution?

Question

Carlie Crawford

Chemistry

16 August, 01:39

To 225mL of a 0.80M solution of KI, a student adds enough water to make 1.0 L of a more dilute KI solution. What is the morality of the new solution?

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Erick Barton · Answer 1

We use the the dilution equation expressed as

M1V1 = M2V2

where the terms with subscripts of one represent the initial conditions for the concentrated solution while the terms with subscripts of two represent the final conditions for the diluted solution.

Rearranging the dilution formula to calculate for the molarity M2 of the diluted solution

M2 = M1V1 / V2 = (0.80M * 0.225L) / 1.0L = 0.18 M