Question

The graph below show the rate of reaction of three different metals X, Y and Z with dilute
sulphuric acid
(i) Out of AI, Mg, Fe which will represent Z?
(a) Al
(b) Mg
(c) Fe
(d) None of these
(ii) Which one will be represented by 'X'
(a) Na
(6) Mg
(c) Al
(d)Zn
(iii) The decreasing order of reactivity of X, Y, Z is:
(a) X>Y>Z
(b) Y>Z>X
(c) Z>Y>X
(d) Z>X>Y​

Answer 1

Answer:

z is mg

x is zn

this is the correct explanation by gurpreet aditya sekhon

Answer 2

i. Option C : Fe i.e. Iron as it is the least reactive

According to the reactivity series of metals, the ordering of reactivity from high to low of the given 3 metals is :

                   $Mg > Al > Fe$

The more the reactivity of the metal, the more vigorously it reacts with the sulphuric acid resulting in the evolution of more hydrogen.

In the graph, metal Z releases the least hydrogen and thus it is the least reactive of the three metals i.e. Fe.

ii. Option A : Na i.e. Soldium as it is the highest reactive metal among the options

According to the reactivity series of metals, the ordering of reactivity from high to low of the given 4 metals is :

                   $Na > Mg > Al > Zn$

As more reactive metals result in more evolution of hydrogen, Na i.e. Metal X will release the most hydrogen as it is the most reactive among the given options.

iii. Option A : X > Y > Z

The amount of evolution of Hydrogen gas in reaction with any acid like sulphuric acid is directly proportional to the reactivity of the metal. The more the Hydrogen gas evolved, the more the reactivity.

Hence, as the evolution of hydrogen is : X > Y > Z, the reactivity relation is also the same.

To learn more about Reactivity Series, visit

https://brainly.in/question/1353445

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