A Zn rod weighing 25g was kept in 100 mL of 1M `CuSO_4` solution. After a certain time the molarity of `Cu^(2+)` in solution was 0.8. What was molarity of `SO_4^(2–)` ? What was the weight of Zn rod after cleaning ? (At. weight of Zn = 65.4)

A zinc rod is placed in 250 mL of 1 M CuSO_4 solution for such a period that the molarity of Cu^(2+) becomes 0.85 M. The molarity of SO_4^(2-) at this stage is :

Zn rod is placed in 100mL of 1M CuSO_(4) solution so that molarity of Cu^(2+) changes to 0.7M. The molarity of SO_(4)^(-) at this stage will be

Zn rod is placed in 100mL of 1M CuSO_(4) solution so that molarity of Cu^(2+) changes to 0.7M. The molarity of SO_(4)^(-) at this stage will be

The molarity of 4 g of NaOH in 100 mL solution is 0.5 M.

1 L of 1 MCuSO_(4) solution is electrolysed. After passing 2 F of electricity, molarity of CuSO_(4) solution will be

A Zn rod weighing 1.0g is taken in 100mL of 1M CuSO_(4) solution . After some time, [Cu^(2+)] in solution =0.9M( atomic weight of Zn=65.5g) . Which of the following statements is // are correct ? a. 0.655g of Zn was lost during the reaction. b. 0.327 g of Zn was lost during the reaction . c. There is no change in the molarity of SO_(4)^(2-) ion. d. There is a change in the molarity of SO_(4)^(2-) ion.

A Zn rod weighing 1.0g is taken in 100mL of 1M CuSO_(4) solution . After some time, [Cu^(2+)] in solution =0.9M( atomic weight of Zn=65.5g) . Which of the following statements is // are correct ? a. 0.655g of Zn was lost during the reaction. b. 0.327 g of Zn was lost during the reaction . c. There is no change in the molarity of SO_(4)^(2-) ion. d. There is a change in the molarity of SO_(4)^(2-) ion.

A Zn rod weighing 1.0g is taken in 100mL of 1M CuSO_(4) solution . After some time, [Cu^(2+)] in solution =0.9M( atomic weight of Zn=65.5g) . Which of the following statements is // are correct ? a. 0.655g of Zn was lost during the reaction. b. 0.327 g of Zn was lost during the reaction . c. There is no change in the molarity of SO_(4)^(2-) ion. d. There is a change in the molarity of SO_(4)^(2-) ion.