Shashank was asked to carry out a displacement reaction which would show the following

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Q.
Shashank was asked to carry out a displacement reaction which would show the following:

(i) Formation of colourless solution
(ii) Black deposits

The reactants he should use are:

1 Fe(s) and $A l_{2} {(S O_{4})}_{3}$ (aq)

2 Al(s) and $F e S O_{4}$ (aq)

3 $Z n (s) a n d C u S O_{4} (a q)$

4 $F e (s) a n d Z n S O_{4} (a q)$

Ans.
(2)

When aluminium metal is added to ferrous sulphate $(F e S O_{4})$ solution, the green colour of ferrous sulphate solution disappears and a colourless solution is formed due to the formation of aluminium sulphate solution, and greyish-black iron gets deposited.

$\underset{G r e e n s o l u t i o n}{3 F e S O_{4}} (a q) + 2 A l (s) ⟶ \underset{G r e y i s h b l a c k d e p o s i t}{3 F e (s)} + \underset{C o l o u r l e s s s o l u t i o n}{A l_{2} {(S O_{4} )}_{3} (a q)}$

Solution

Q.
Shashank was asked to carry out a displacement reaction which would show the following:

(i) Formation of colourless solution
(ii) Black deposits

The reactants he should use are:

1 Fe(s) and $A l_{2} {(S O_{4})}_{3}$ (aq)

2 Al(s) and $F e S O_{4}$ (aq)

3 $Z n (s) a n d C u S O_{4} (a q)$

4 $F e (s) a n d Z n S O_{4} (a q)$

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Solution

Q. Shashank was asked to carry out a displacement reaction which would show the following: (i) Formation of colourless solution (ii) Black deposits The reactants he should use are:

1 Fe(s) and Al2(SO4)3(aq)

2 Al(s) and FeSO4(aq)

3 Zn(s) and CuSO4(aq)

4 Fe(s) and ZnSO4(aq)

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Q.
Shashank was asked to carry out a displacement reaction which would show the following:

(i) Formation of colourless solution
(ii) Black deposits

The reactants he should use are:

1 Fe(s) and $A l_{2} {(S O_{4})}_{3}$ (aq)

2 Al(s) and $F e S O_{4}$ (aq)

3 $Z n (s) a n d C u S O_{4} (a q)$

4 $F e (s) a n d Z n S O_{4} (a q)$