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Gravity Separation

30. Zn rod is...

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30. Zn rod is placed in 100ml of 1m cuso4 solution so that molarity of cu2+ changes to 0.7 m . The molarity of SO4 2- at this stage will be

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Z n

rod is placed in 100 L of 1M

CuS O_{4}

solution so that molarity of

C u^{2 +}

changes to 0.7 M. The molarity of

{SO}_{4}^{2 -}

at this stage will be:

Q. A Zn rod weighing

25

100

1

C u S O_{4}

solution. After a certain time the molarity of

C u^{2 +}

in solution was

0.8

. What was the weight of Zn rod after cleaning? At. weight of Zn

= 65.4

Q. A Zn rod weighing 25 g was kept in 100mL of 1 M

C u S O 4

solution. After a certain time, the molarity of

C l^{2 +}

in solution was 0.8. What was the molarity of

{S O}_{4}^{2 -}

? What was the mass of the

Z n

rod after cleaning?

(The atomic mass of

Z n = 65.4

1 M

C u {S O}_{4}

solution is electrolysed. After passing

2 F

charge, the molarity of

C u {S O}_{4}

100 m L

0.2 N H C l

solution is added to

100 m L

0.2 N A g N O_{3}

solution. The molarity of nitrate ions in the resulting mixture will be:

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