Question

4. Given the following three observations of the reactions of four metals ...
(1) Metal O will displace metal N from its chloride
(2) Only metal L reacts with cold water
(3) Metal N reacts faster with acid than metal M
What is their reactivity order, from the most to the least reactive?
A. M > O > N > L
B. O> L > N > M
C. L > O > N > M
D. L > N > O > M

its urgent please

Answer 1

Answer:

C. L > O > N > M

Explanation:

Being that L can react with cold water we rank it as the most reactive. O can displace the chloride of N and N reacts faster than M in acids hence that arrangement.

Answer 2

The correct order of reactivity is option (C) L > O > N > M

EXPLANATION

• In the given question we are required to arrange the given metal in the order of their reactivity.
• In the second option it is given metal L reacts with cold water. We know that the metal that is very reactive only reacts with cold water.
• Therefore, the first metal is L in the order of reactivity.
• We know that metal of high reactivity displaces metal of low reactivity form its salt. Therefore, Metal O is more reactive than Metal N.
• We know that metal of higher reactivity reacts readily with acids to form metal salts and liberation of Hydrogen gas. Therefore, Metal N is more reactive than metal M.

Hence, The order of reactivity of metals is- option (C) L > O > N > M

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