What mass of kcl in grams must be added to 500 ml of a 0. 15 m kcl solution to produce a 0. 40 m solution.

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02-08-2022
Chemistry

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What mass of kcl in grams must be added to 500 ml of a 0. 15 m kcl solution to produce a 0. 40 m solution.

Sagot :

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Tutorconsortium367 Tutorconsortium367 · Answer 1 · 2022-08-07T05:14:16-04:00

91.4 grams mass of KCl is required.

Concentration = moles/Volume

2.45M=mol/0.5L

2.45M⋅0.5L=mol

mol=1.225

Convert no. of moles to grams using the atomic mass of K + Cl

1.225mol⋅(39.1+35.5)/gmol

1.225mol⋅74.6g

mol=1.225⋅74.6g = 91.4g

What is Concentration?

The formula for determining concentration from moles and volume is pretty straightforward. Simply divide the volume of solution by the moles of solute.
The number of moles of a component divided by the sum of the moles in the solution is what is known as a mole fraction, which is a unit of concentration.
Mole fraction is a unit-free expression because it represents a ratio.

To learn more about concentrations, refer to the given link:

https://brainly.com/question/23312431

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What is Concentration?

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