The following pairs of soluble solutions can be mixed. In some cases, this leads to the formation of an insoluble precipitate. Decide, in each case, whether or not an insoluble precipitate is formed. a. K2S and NH4Cl
b. CaCl2 and NH4CO3
c. Li2S and MnBr2
d. Ba(NO3)2 and Ag2SO4
e. RbCO3 and NaCl

a) and :

There are no insoluble precipitate forms.

b) and :

There are the insoluble precipitates of  forms.

c) and :

There are the insoluble precipitates of  forms.

d) and :                        

As is insoluble, therefore no precipitate forms.

e) and :

There are no insoluble precipitates forms.

Explanation:

a)

Solubility rule suggests:- ⇒ soluble, ⇒ soluble.

                                          KCl ⇒ soluble,  ⇒ soluble.

There are no insoluble precipitate forms.

b)

Solubility rule suggests:- ⇒ soluble, ⇒ soluble.

                                        ⇒ insoluble,  ⇒ soluble.

There are the insoluble precipitates of  forms.

c)

Solubility rule suggests:- ⇒ soluble, ⇒ soluble.

                                        ⇒ soluble,  ⇒ insoluble.

There are the insoluble precipitates of  forms.

d)

Solubility rule suggests:- ⇒ soluble, ⇒insoluble.

As is insoluble, therefore no precipitate forms.

e)

Solubility rule suggests:- ⇒ soluble, ⇒ soluble.

                                        ⇒ soluble,  ⇒ soluble.

There are no insoluble precipitates forms.

the answer is a. co2, this would be colder than the : )

explanation: