Question

2 moles of zinc reacts with a cupric chloride solution containing 6.023* 10 23 formula units of CuCl2 Calculate the moles of the copper obtained

Answer 1

Zn + CuCl2 ----> Cu + ZnCl2
moles of Zn = 2
moles of CuCl2 = 6.023 x 10^23 / 6.023 x 10^22 = 10
according to the reaction 1 mole of Zn reacts with 1 mole of cupric chloride
therefore 2 moles of zinc will react with 2 moles of copper chloride and will produce 2 moles of copper .

Answer 2

Answer:

Zn + CuCl2 -------> ZnCl2 + Cu

1 Mole Zn + 1 mole CuCl2 --------> 1 Mole ZnCl2 + 1 Mole Cu

6.023 x 10^22 formula units means = 0.1 m of CuCl2

∴ 2 Moles of Zn + 0.1 mole of CuCl2 --------> ........moles of Cu

0.1 Moles of CuCl2 reacts with only 0.1 mole of Zn and forms 0.1 moles of Cu