Question 1
Given the reaction:
2KMnO
4 + 10 KI + 8 H
2SO
4→ 6 K
2SO
4 + 2 MnSO
4 + 5 I
2 + 8 H
2O
How many moles of H
2SO
4 are required to produce 2.0 moles of I
2, given the other reactants are in excess?
◦ 0.80 mol
◦ 1.3 mol
◦ 3.2 mol
◦ 4.0 mol
◦ 1.6 mol
Question 2
Given the reaction:
P
4(l) + 6 Cl
2(g) → 4 PCl
3(l)
If the percent yield is 82%, what mass of P
4 is required to obtain 2.30 g PCl
3 (Cl
2 in excess)?
◦ 0.63 g
◦ 0.52 g
◦ 0.43 g
◦ 0.16 g
◦ 0.95 g