Question 1
In the reaction: 4 Zn + K
2Cr
2O
7 + 7 H
2SO
4→ 4 ZnSO
4 + 2 CrSO
4 +K
2SO
4 + 7 H
2O, if 25.4 g of zinc sulfate is to be made, how many grams of potassium dichromate is required?
◦ 13.9 g
◦ 3.48 g
◦ 46.3 g
◦ 6.35 g
◦ 11.6 g
Question 2
In the reaction: 4 Zn + K
2Cr
2O
7 + 7 H
2SO
4→ 4 ZnSO
4 + 2 CrSO
4 +K
2SO
4 + 7 H
2O, if the extent of reaction, x, is 0.0393, how many grams of potassium dichromate is required?
◦ 13.9 g
◦ 3.48 g
◦ 46.3 g
◦ 6.35 g
◦ 11.6 g