Question

5L of a solution contains 25 mg of Caco. What is its concentratin in ppm? (Mol.wt. of C:
1) 25
2) 1
3) 3
4) 2500​

Answer 1

Answer:

=

25

×

10

−

3

×

10

6

5000

=

5

=25×10-3×1065000=5

Explanation:

=

25

×

10

−

3

×

10

6

5000

=

5

=25×10-3×1065000=5

Answer 2

Answer:

Concentration = 5 ppm

Explanation:

# Given -

Weight of 5 L solution = 5 kg = 5000 g

Weight of CaCO3 = 25 mg = 25×10^-3 g

# Solution -

Concentration of CaCO3 in ppm is calculated by -

Concentration = W(CaCO3)/W(Solution) × 10^6

Concentration = 25×10^-3 / 5000 × 10^6

Concentration = 5 ppm

Therefore, conc of solution is 5 ppm.

Thanks dear. Hope this helps you...