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NEET2019ChemistrySome Basic Concepts of ChemistryActual

If molarity of Cu ⁺² ions is 3 10⁻⁴ express this in ppm

Options

  1. A0.3
  2. B0.2
  3. C0.1
  4. D0.6

Correct answer

A. 0.3

Step-by-step solution

When solute is present in trace quantities, the concentration is expressed in parts per millions ( ppm ) or gmL ⁻¹ . 100 ml of solution =3 10⁻⁴ Cu ²⁺ ions 10^6 ml of solution = 3 10⁻⁴ 100 10^6=0.3 ppm

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