Question

Which of the following is a synthesis reaction?

A) AgNO3 + NaCl → AgCl + NaNO3
B) BaO + H2O → Ba(OH)2
C) SO3 + H2O → H2SO4
D) Cu + AgNO3 → Ag + CuNO3

Answer 1

I believe that the answer is either B or C, because a synthesis reaction is when A+B→AB, so A and D cannot be correct, hope this helps some.

Answer 2

C) SO3 + H2O → H2SO4

Step-by-step explanation:

Took the test, this is the answer.