Question

Balance the following equation? Ca(OH)2 (s) + (NH4)2 SO4 (s) → CaSO4 (s) + H2 O (l) + NH3 (g)

Answer 1

This is simply an acid-base reaction.....where ammonium is the acid....

Explanation:

And thus.....

`NH_4^(+) + HO^(-) rarrNH_3(aq) + H_2O(l)`...

and so.....

`Ca(OH)_2(s) + (NH_4)_2SO_4(aq)rarr CaSO_4(s)darr+2NH_3(aq) +2H_2O(l)`

Calcium sulfate is reasonably insoluble....and precipitates from solution as a white powder.