Question #7ba2d

1 Answer
Dec 27, 2015

Answer:

#i.# #Ba^(2+) + CO_3^(2-) rarr BaCO_3(s)darr#

#ii.# #Ca^(2+) + HPO_4^(2-) rarr CaHPO_4(s)darr#

Explanation:

All carbonates are insoluble (except for the obvious exceptions, which are?). Calcium biphosphate is about as soluble as a brick (#< 20 xx 10^(-3) g*L^-1#).