Question

The conc. Of dissolved impurity is expressed in
term of Select one:
a. equivalent of ZnSO4
O
b. Equivalent of CaCO3
c. Equivalent of Na 2003
O O O
d. equivalent of Mg CO3​

Answer 1

Answer:

HERE IS YOUR ANSWER DEAR!!

b. Equivalent of Caco3 is the right answer

Answer 2

The correct answer is option (b). equivalent of $CaCO_3$.

• The concentration of dissolved impurities in water or the concentration of hardness as well as non-hardness-constituting ions are expressed in terms of ppm of calcium carbonate $(CaCO_3)$.
• As they are partially or entirely soluble in water, the other choices are not taken into account when expressing the concentration of dissolved contaminants, whereas calcium carbonate, the most insoluble salt form, precipitates with water.
• Parts per million, or ppm, is the unit used to express the concentration of dissolved contaminants in a solution.
• The ppm is the parts of calcium carbonate equivalent per $10^6$ parts of water.
• The calcium and magnesium salts as well as other heavy metals dissolved in the water contributes to its hardness.

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