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

Question

If molarity of Cu 2+ ions is 3 × 10-4 express this in ppm (A) 0.3 (B) 0.2 (C) 0.1 (D) 0.6

Tardigrade Admin · Accepted Answer

1000 mL of solution contains 3 × 10-4 Cu 2+ ions. So, 106 mL of solution contains (3×10-4/1000)×106=0.3 ppm

Q. If molarity of $C u^{2 +}$ ions is $3 \times 1 0^{- 4}$ express this in $pp m$