Question

solve + explain it.. (@_@)(@_@)​

Answer 1

$\LARGE{ \underline{\underline{\sf{Question:}}}}$

A student added few pieces of aluminium metal to two test tubes A and B containing aqueous solutions of iron sulphate and copper sulphate. In the second part of her experiment, she added iron metal to another test tubes C and D containing aqueous solutions of aluminium sulphate and copper sulphate.

In which test tube or test tubes will she observe colour change? On the basis of this experiment, state which one is the most reactive metal and why.

$\LARGE{ \underline{\underline{\sf{Answer:}}}}$

$\large\sf{\:\:\:\:\:1 \:experiment}$

A student took 2 test tube A and B , 'A' test tube containing aqueous solutions of iron sulphate And 'B' test tube containing aqueous solutions of copper sulphate .

now adding Aluminum metal to A and B test tube .

1. A test tube added Aluminum metal.

$\large\sf{\:\:\:\:\:\:Al + FeSO_4 ⟹ Al_2(SO_4)_3 + Fe}$

$\large\sf{\:\:\:\:\:\:Balanced \:equation = 2Al + 3FeSO_4 ⟹ Al_2(SO_4)_3 + 3Fe}$

2. B test tube added Aluminum metal

$\large\sf{\:\:\:\:\:\:Al + CuSO_4 ⟹ Al_2(SO_4)_3 + Cu}$

$\sf{\:\:\:\:\:\:Balanced \:equation = 2Al + 3CuSO_4 ⟹ Al_2(SO_4)_3 + 3Cu}$

$\large\sf{\:\:\:\:\:2 \:experiment}$

A student took 2 test tube C and D , 'C' test tube containing aqueous solutions of Aluminum sulphate And 'D' test tube containing aqueous solutions of copper sulphate .

now adding iron metal to A and B test tube .

3. C test tube added iron metal.

$\large\sf{\:\:\:\:\:\: Fe + Al(SO_4)_3 ⟹ No \:reaction}$

4. D test tube added iron metal

$\large\sf{\:\:\:\:\:\:Fe + CuSO_4 ⟹ FeSo_4 + Cu}$

$\sf{\:\:\:\:\:\:Balanced \:equation = Fe + CuSO_4 ⟹ FeSo_4 + Cu}$

Quick Answer:-

1. Color changes in A , B , D test tube because chemical reaction take places so we can observe the changes in color . Hence student observe change in color in A , B , D test tube .

2. Aluminum is the most reactive metal it displace the low reactive metal like zinc , lead , iron , copper, mercury, silver , gold . In reactivity series it's lys in 5 place .

$\sf\red{Here \:we \:done \:all :)}$