Reaction Kinetics: Heterogenous vs Homogenous - 65 Characters

[answerseeker]

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)

 

[GCT]

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?

 

[ravenprp]

The heterogenous reaction, Zn(s) + S(s) → ZnS(s), would happen faster due to the increased surface area. All other factors are equal.