Duplicate Question
The question on this page has been marked as a duplicate question.
Original Question
Calculate the amount of H2 produced from the reaction of 4.25 grams Zn and 25 ml of 3.0 M HCL.Asked by Monique
Calculate the amount of H2 produced from the reaction of 4.25 grams Zn and 25 ml of 3.0 M HCL.
Answers
Answered by
DrBob222
This is a limiting reagent (LR) problem.
Zn + 2HCl ==> H2 + ZnCl2
mols Zn = grams/atomic mass = ?
mols HCl = M x L = ?
Using the coefficients in the balanced equation, convert mols Zn to mols H2.
Do the same to convert mols HCl to mols H2.
More than likely the two values for mols H2 produced will not be the same which means one of the values is not right. The correct value in LR problems is ALWAYS the smaller one and the reagent producing that value is the LR.
Take the smaller value of mols H2 produced and convert it to grams. g H2 = mols H2 x molar mass H2.
Zn + 2HCl ==> H2 + ZnCl2
mols Zn = grams/atomic mass = ?
mols HCl = M x L = ?
Using the coefficients in the balanced equation, convert mols Zn to mols H2.
Do the same to convert mols HCl to mols H2.
More than likely the two values for mols H2 produced will not be the same which means one of the values is not right. The correct value in LR problems is ALWAYS the smaller one and the reagent producing that value is the LR.
Take the smaller value of mols H2 produced and convert it to grams. g H2 = mols H2 x molar mass H2.
Answered by
Doc
What was wrong with the solution I posted on this same problem? => Tuesday, April 18, 2017 at 9:35pm
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.