Question

The concentration of lead in an industrial waste stream is 0.28 ppm. What is its molar
concentration?

Answer 1

Answer:

The concentration of lead in an industrial waste stream is 0.28 ppm. What is its molar

concentration?

Explanation:

Answer 2

Answer:

The molar concentration of 0.28ppm of Lead is equal to $13.53$μM.

Explanation:

• The molecular mass of lead is$207$.
• 1 Molar solution of lead salt solution contains $207$g of lead in $1000$mL.

• 1 ppm is equal to 1mg per $100$mL and therefore$0.28$ ppm is equal to 2.8 mg per$1000$ mL.
• To find a molar concentration of the solution $=(Concentration of solution/ Molecular weight)$

Therefore, $2.8$mg per $1000$mL solution contains =$= 0.0028 g/207 = 0.0000135 M$

That is equal to $13.53$μM