What type of reaction is shown below. Name all compounds in each reaction...

Question

A. SO3(g)+H2O(I)—>H2SO4(aq)

 

B. CuSO4 x5H2O—> CuSO4+5H2O

 

possible reactions are decomposition, combination, replacement, double replacement, and oxidation reduction. 

Answer 1

A.  This is of the type A + B ===> C.  Clearly this is NOT decomposition or replacement.  That leaves combination (synthesis) or redox.  In redox, the oxidation sates of the elements must change from left side to right side of reaction. Do they?  (Note:  redox reactions can also be other types as well).

Name of compounds:  sulfur trioxide; water; copper(II) sulfate pentahydrate

 

B.  This is of the type A ===> B + C.  Again, this is clearly NOT combination (synthesis) or any replacement reaction.  This leaves decomposition, or redox.  Do any of the elements change oxidation states from left side to right side of reaction? If not, then it cannot be redox.

Name of compounds: Copper(II) sulfate pentahydrate; water; copper(II) sulfate