Question

metal 3 reacted with the salt of metal 4. the products were metal 4 and a salt and metal 3 . however metal 4 had no reaction with a salt of metal 3. what can you say about the reactivity of m3 and m4

Answer 1

Steps:
1) Let X be the anion of the salt formed.
Then, 
$M_{3} + M_{4}X ------\ \textgreater \ M_{3}X + M_{4}$

According to reaction, $M_{3}$ displaces $M_{4} \:\: from \:\: M_{4}X$ :
=> $M_{3}$ is more reactive than $M_{4}$ .

2) For Confirmation ,We are also provided

$M_{4} + M_{3}X-----\ \textgreater \ No\:\:\: Reaction$

Here, $M_{4}$ can't displace $M_{3} \:\:\: from \:\:\: M_{3}X$.
=> $M_{4}$ is less reactive than $M_{3}$ . 

Conclusion: $M_{3}$  is more reactive than $M_{4}$.

Answer 2

Answer:

Steps:

1) Let X be the anion of the salt formed.

Then,

M3+ M₁X

\textgreater M3X + M4

According to reaction, M3 displaces

M₁ from MAX :

=> M3 is more reactive than M₁.

2) For Confirmation ,We are also

provided

M4 + M3X

\textgreater No Reaction

Here, M4 can't displace M3 from M3X

=> M4 is less reactive than M3 .

Conclusion: M3 is more reactive than

MA

Explanation:

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