CuSO4aq - Fes - FeSO4aq - CusFeSO4aq-Zns - ZnSO4aq-FesChoose the correct answer- among the following statements-

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard VIII

Chemistry

Reaction of metals with bases

CuSO4aq + Fes...

Question

$C u S O_{4} (a q) + F e (s) \to F e S O_{4} (a q) + C u (s) F e S O_{4} (a q) + Z n (s) \to Z n S O_{4} (a q) + F e (s)$
Choose the correct answer, among the following statements.

Zinc is the most reactive element among all

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Copper is the most reactive element among all

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Iron is the most reactive element among all

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Iron is the least reactive element among all

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Zinc is the most reactive element among all
As can be seen from the given two reactions, iron can displace copper from its salt solution. Hence, iron is more reactive than copper. Zinc can displace iron from its salt solution. Hence, zinc is the more reactive element than iron. So, the reactivity order follows the order $C u < F e < Z n$ .

Suggest Corrections

Similar questions

Q. State which of the following chemical reactions will take place or not, giving suitable reason for each:

(a) Z n_{(s)} + C u S o_{4 (a q)} \to Z n S O_{4 (a q)} + C u_{(s)}

(b) F e_{(s)} + Z n S O_{4 (a q)} \to F e S O_{4 (a q)} + Z n_{(s)}

(c) Z n_{(s)} + F e S O_{4 (a q)} \to Z n S O_{4 (a q)} + F e_{(s)}

{CuSO}_{4} (aq) + Fe (s) \underset{}{\to} {FeSO}_{4} (aq) + Cu (s) {FeSO}_{4} (aq) + Zn (s) \underset{}{\to} {ZnSO}_{4} (aq) + Fe (s)

On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.

Which of the following reactions will not occur ? Why not?
(a) $M g S O_{4} (a q) + C u (s) ⟶ C u S O_{4} (a q) + M g (s)$
(b) $C u S O_{4} (a q) + F e (s) ⟶ F e S O_{4} (a q) + C u (s)$
(c) $M g S O_{4} (a q) + F e (s) ⟶ F e S O_{4} (a q) + M g (s)$

Q. State, giving reasons, which of the following reactions will occur and which will not:
(a) MgSO₄ (aq) + Cu(s) → CuSO₄ (aq) + Mg(s)
(b) CuSO₄ (aq) + Fe (s) → FeSO₄(aq) + Cu(s)
(c) MgSO₄ (aq) + Fe (s) → FeSO₄ (aq) + Mg(s)

Q. Four metals

Z n, F e, C u

and

A l

are taken and added to the following solutions one by one. The results obtained are tabulated below:

Metal	$Z n S O_{4} (a q)$	$F e S O_{4} (a q)$	$C u S O_{4} (a q)$	$A l_{2} (S O_{4})_{3} (a q)$
$Z n$	-	Displaced	Displaced	No reaction
$F e$	No reaction	-	Displaced	No reaction
$C u$	No reaction	No reaction	-	No reaction
$A l$	Displaced	Displaced	Displaced	-

From the above data, the decreasing order of reactivity of metals is-

Join BYJU'S Learning Program

CuSO4(aq)+Fe(s)→FeSO4(aq)+Cu(s)FeSO4(aq)+Zn(s)→ZnSO4(aq)+Fe(s) Choose the correct answer, among the following statements.

$C u S O_{4} (a q) + F e (s) \to F e S O_{4} (a q) + C u (s) F e S O_{4} (a q) + Z n (s) \to Z n S O_{4} (a q) + F e (s)$
Choose the correct answer, among the following statements.