NEET2019ChemistrySome Basic Concepts of ChemistryActual
If molarity of Cu ⁺² ions is 3 10⁻⁴ express this in ppm
Options
- A0.3
- B0.2
- C0.1
- 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