Question

The following equation is not balanced

CaSO4 + AlCl3 ---> CaCl2 + Al2 (SO4)3

Notice that SO4 appears in two different places in this chemicalequation. SO4^2- is a polyatomic ion called "sulfate".

(i) What number should be placed in front of CaSO4 to give the sametotal number of sulfate ions on each side of the equation?
CaSO4 +ALCL3 ---> CaCl2 + Al2 (SO4)3


(ii) MnI2 (aq) + AgNO3(aq) --? AgI(s) + AgI(s) + Mn(NO3)2(aq)
Express your answer as a chemical equation. Identify all of thephases in your answer.

(iii) NaN3 (s) -? Na(s) + N2 (g)
Express your answer as a chemical equation. Identify all of thephases in your answer.

(iv) Cl2(g) + NaOH(aq) ---> NaCl(aq) + NaClO3(aq) + H2O(l)
Express your answer as a chemical equation. Identify all of thephases in your answer.


(v) BaCl2(aq) + H3PO4(aq) ---> H3PO4(aq) ---> Ba3 (PO4)2(s) +HCl(aq)
Express your answer as a chemical equation. Identify all of thephases in your answer.