Use stoichiometry and the balanced equation to determine which among Zn and HCl is the limiting reactant and the correct mass of ZnCl2 formed
For this matter, we need to find the molar mass of Zn. The molar mass of HCl and ZnCl2 is 36.5 g/mol and 136.3 g/mol
Zn 1 Zn × 65.38 g/mol Zn = 65.38 g/mol
Determine the limiting reactant (LR) and the mass (in grams) of ZnCl2 (molar mass = 136.3 g mol-1) that can be formed from 5.3 g of Zn and 7.4 g of HCl (molar mass = 36.5 g mol-1):
Zn + 2 HCl → ZnCl2 + H2
A. LR = Zn; 6.17 g ZnCl2 formed
B. LR = Zn; 11.05 g ZnCl2 formed
C. LR = H2; 6.46 g ZnCl2 formed
D. LR = HCl; 6.46 g ZnCl2 formed
E. LR = HCl; 6.17 g ZnCl2 formed
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Limiting Reagent concept. If you need more Limiting Reagent practice, you can also practice Limiting Reagent practice problems.
What is the difficulty of this problem?
Our tutors rated the difficulty ofDetermine the limiting reactant (LR) and the mass (in grams)...as low difficulty.