If 4 mg solute is present in 1000 g water, what is the concentration in parts per million?
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Answer and explanation
Correct answer: 4 ppm
For a dilute aqueous solution, 1 ppm is approximately 1 mg solute per kg of water or solution. Here 1000 g water equals 1 kg, and 4 mg solute per kg corresponds approximately to 4 ppm. More exactly, using total solution mass changes the value negligibly in this dilute case, so 4 ppm is the intended answer.
Frequently asked questions
What is the correct answer to this question?
4 ppm
Why is this the correct answer?
For a dilute aqueous solution, 1 ppm is approximately 1 mg solute per kg of water or solution. Here 1000 g water equals 1 kg, and 4 mg solute per kg corresponds approximately to 4 ppm. More exactly, using total solution mass changes the value negligibly in this dilute case, so 4 ppm is the intended answer.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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