Question

1a). If you react 16 mol A with 15 mol B in the reaction 4A + 3B → 2C, what is the limiting reactant?
1b). What is the theoretical yield of product C in mol?



3a.) If Pb(NO3)2 were the limiting reactant in this reaction: Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2 KNO3 (aq) and KI were added in excess, what chemicals would be found in the filtrate? What would be ALL the chemicals ,including water if present?


3b.) If you add Pb(NO3)2 (aq) to the chemicals in part a^, would there be any chemical reaction? If so, what is the balanced chemical equation including phases of all chemicals. If not, write "No Reaction"


3c.) If you add KI(aq) to the chemicals listed in part a^, would there be any chemical reaction? If so, what is the balanced chemical eq'n including phases of all chemicals. If not, write "No Reaction"

Answer 1

1a). If you react 16 mol A with 15 mol B in the reaction 4A + 3B → 2C, what is the limiting reactant?
1b). What is the theoretical yield of product C in mol?

**well, your reaction has four times the balanced A, but not 4x of B. So B limits the reacation. You will only get 15/4 * 2 C moles

3a.) If Pb(NO3)2 were the limiting reactant in this reaction: Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2 KNO3 (aq) and KI were added in excess, what chemicals would be found in the filtrate? What would be ALL the chemicals ,including water if present?
**No all the Pb(NO3)2 would be used up. However, nitrate ions would be present from the KNO3.


3b.) If you add Pb(NO3)2 (aq) to the chemicals in part a^, would there be any chemical reaction? If so, what is the balanced chemical equation including phases of all chemicals. If not, write "No Reaction"
**Yes, adding more leadIINitrate with the other chems present, will get it going again.


3c.) If you add KI(aq) to the chemicals listed in part a^, would there be any chemical reaction? If so, what is the balanced chemical eq'n including phases of all chemicals. If not, write "No Reaction"
No reaction, as the lead nitrate is gone.