Question

What is the concentration of chlorine in ppm, in a 2.0L sample of pool water that contains 5.2mg of chlorine. How do I do this problem

Answer 1

Answer: 2.6 ppm

Explanation: ppm is parts per million, also 1:1000 000.

It means 1 mg in 1000 000 mg is same as 1 mg in 1000 g

Assume 2.0 litres weighs 2.0 kg = 2000 g

In one litre there is 2.6 mg Cl. You get a proportion 2.6 mg :1000 g

Answer 2

The concentration of chlorine is 2.6 ppm.

What is concentration?

Concentration can be calculated in terms of Parts per million, or ppm, that is a measurement of dissolved solids in solution expressed as a ratio of the count of parts of solids/solute to one million parts of total volume.

The concentration can be calculated by using the formula:

C = m / v

where, C is concentration, m is mass and v is volume.

Calculation of concentration is shown as:

By using the formula, C = m / v

Put the values of m = 5.2 mg and v = 2 L in concentration formula.

C = 5.2 mg  / 2 L

C = 2.6 ppm

Therefore, the concentration of solution will be 2.6 ppm.

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