Of the three matels X-Y and Z-X reacts with cold water- Y with hot water and Z with steam only- Identify X-Y amp- Z and also arrange them in order of increasing reactivity

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Standard X

Chemistry

Decomposition Reaction

of the three ...

Question

of the three matels X,Y and Z,X reacts with cold water, Y with hot water and Z with steam only. Identify X,Y & Z and also arrange them in order of increasing reactivity

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Solution

We are given that X reacts with cold water, Y reacts with hot water and Z reacts with steam only. Thus X will be a metal that occurs earlier in the reactivity series. It could be potassium, sodium or calcium. Metal Y reacts with hot water, so metal Y is magnesium as magnesium reacts very slowly with cold water but readily reacts with hot water. Metal Z is Zinc, as it is well known that zinc does not react with cold water, extremely slowly with hot water but readily with steam.

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Of the three metals X, Y and Z, X reacts with cold water, Y with hot water and Z with steam only. Identify X, Y and Z and also arrange them in order of increasing reactivity.

Q. Of the three metals X, Y and Z, X reacts with cold water, Y with hot water and Z with steam only. Increasing order of reactivity with their identity is:

Three metals X, Y and Z are given. X reacts with cold water, hot water and steam. Y reacts with hot water and steam and Z reacts with steam only. Identify X, Y, and Z from the below options.

From the metals copper, iron, magnesium, sodium and zinc, select a different metal in each case which:
(i) does not react with dilute hydrochloric acid.
(ii) can form 2+ and 3+ ions.
(iii) has a hydroxide that reacts with both acids and alkalis.
(iv) does not react with cold water but reacts with steam when heated.
Arrange the metals in increasing order of reactivity.

From the metals: copper, iron,magnesium, sodium, and zinc, select a different metal in each case which:

(a) does not react with dilute hydrochloric acid,

(b) can form $2^{+}$ and $3^{+}$ ions,

(d) does not react with cold water but reacts with steam when heated.

(e) Arrange the above metals in their decreasing order of reactivity.

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