Suppose the mole number of ca2+ ions in a 50 ml water sample is quantified as 1.5 × 10−5 mol. what is the concentration of ca2+ ions in the water sample in ppm caco3?

Answer : The concentration of ions in the water sample in ppm is, 12000 ppm

Solution : Given,

Moles of calcium =

Molar mass of calcium = 40 g/mole

Volume of solution = 50 ml

First we have to calculate the mass of calcium.

(1 g = 1000 mg)

Now we have to calculate the concentration of calcium.

(1 ppm = 1 mg/L)

Therefore, the concentration of ions in the water sample in ppm is, 12000 ppm

-be a crystalline solid

- be soluble in water

-conduct electricity

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