In the removal of water hardness, permutit is regenerated with a strong solution of

chijioke7

7 years ago

Incomplete explanation, the question asked which solution is used to regenerate the permutit
As hard water is passed through the permutit, the sodium ions will go into solution while the unwanted calcium or magnesium ions take their place in the complex salt and precipitate as shown below

2Na-permutit + Ca²⁺→Ca-(permutit)₂+ 2Na⁺

NB: The calcium permutit is insoluble and it precipitates out of solution

When the permutit is being used up, it can be regenerated by pouring a strong solution of common salt through the resin

NaCl + Ca-(permutit)₂ → 2Na-permutit + CaCl

OsagieN

2 years ago

𝗡𝗮𝗖𝗹...𝗗

Morrisonaboyd

3 years ago

d is correct right?
but it is showing there is no answer

Chiemezie29

2 years ago

No right answer

Almustapha002

2 years ago

There is no answer