Reaction kinetics

Main Question or Discussion Point

would reactions happen faster in heterogenous rxns or in homogenous? also, i was wondering if i am correct in assuming that heterogenous & homogenous reactions affect: temp, concentration, nature of reactants and catalysts? only surface area affects heterogenous.

for this question, would u look at the states: aq>g>l>s ? or whether it is heterogenous/homogenous?
1. Which of the following reactions is the slowest at room temperature?



A. Zn(s) + S(s) → ZnS(s)

B. Ba2+(aq) + SO42-(aq) → BaSO4(s)

C. NH3(g) + HCl(g) → NH4Cl(g)

D. 2 Ag+(aq) + CO32-(aq) → Ag2CO3(s)
 

Answers and Replies

GCT
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try to be a bit more clear when asking questions
also, i was wondering if i am correct in assuming that heterogenous & homogenous reactions affect: temp, concentration, nature of reactants and catalysts? only surface area affects heterogenous.
what on earth are you trying to say?

Think about how reactions would proceed in light of hess' law. How would reaction A) occur, what type of reaction is it?
 

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