9 Slides • 4 Questions

Percentage Purity

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What is % purity?

Percent purity is important since when you make a compound you may have a small amount of impurity in the sample and you would need to keep this below a certain level. Or you may need to know how much of a particular ion is dissolved in water to determine if it is below the legally allowed level.

(Siyavula)

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Dropdown

mass of the sample

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Dropdown

mass of the compound

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Multiple Choice

A container holds 800 grams of sodium chloride (table salt). Analysis reveals that 700 grams of the sample is pure sodium chloride, while the rest is an impurity. Calculate the percentage purity of the sodium chloride

1

75%

2

87%

3

90%

4

87.5%

9

Multiple Choice

If the mass of calcium chloride produced is 3,6 g, what is

the percent purity of the limestone sample?

1

92.7%

2

90%

3

87.58%

4

63.85%

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Worked Solution

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Worked Solution

Percentage Purity

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Gr 11 % Purity

Percentage Purity

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Worked Solution

Worked Solution

Worked Solution

Percentage Purity

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