TS EAMCET · Chemistry · Hydrogen
Reaction of calgon with hard water containing \(\mathrm{Ca}^{2+}\) ions produce
- A \(\left(\mathrm{Na}_2 \mathrm{CaP}_6 \mathrm{O}_{18}\right]^{2-}\)
- B \(\mathrm{Ca}_2\left(\mathrm{PO}_4\right)_3\)
- C \(\mathrm{CaCO}_3\)
- D \(\mathrm{CaSO}_4\)
Answer & Solution
Correct Answer
(A) \(\left(\mathrm{Na}_2 \mathrm{CaP}_6 \mathrm{O}_{18}\right]^{2-}\)
Step-by-step Solution
Detailed explanation
Calgon is a trade name of a complex salt, sodium hexametaphosphate \(\left(\mathrm{NaPO}_3\right)\). Calgon ionises to give a complex anion. The addition of calgon to hard water causes the calcium ions of hard water to displace sodium ions from the anion of calgon and form a…
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