Question

A certain sample of well water contains 0.1percentage of calcium ions (w/w) .The concentration if calcium ion in the water , express in ppm​

Answer 1

Explanation:

1000

ppm=(w/w)×10^4

therefore the concentration of calcium ions in ppm will be 1000

Answer 2

Answer:

1000 ppm

Explanation:

As per the given data,

a certain sample of well water contains 0.1 % of calcium ions (w/w)

This means 0.1% of Ca⁺² ions present in 100 gm of solution.

i.e. 0.1 gm of Ca⁺² ions present in 100gm of water.

Thus

Weight of solute/weight of solution=0.1/100

• So the concentration of Ca⁺² ions in the water can be calculated in parts per million (ppm) as:

⇒ $\frac{Mass of solute}{mass of soultion}$ × 10⁶

⇒$\frac{0.1}{100}$ × 10⁶

=0.1 x 10⁴ = 1000 ppm

∴Hence the concentration of calcium ions in the water is found to be 1000 ppm​.