A student had three metals X, Y and Z. Metal X reacts with dilute hydrochloric acid but not with water. Metal Y reacts with both water and dilute hydrochloric acid. Metal Z does not react with either water or hydrochloric acid.
1. Determine the reactivity of the metals.
2. Identify the chemical nature of metals X, Y and Z.

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Solution

1. The reactivity of the metals are in the following order :

Y > X > Z

This is because Y reacts with both water and HCl so this accounts for its high reactivity and Z does not react in any condition so it is least reactive.

2. Y can be Alkali or Alkaline earth metal such as Na,K or Mg.
X can be transition elements of starting series such as Fe.
Z are p-block metals or transition elements of end such as Pb and Cu.

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Similar questions

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.

(a) Name one metal which reacts with dilute hydrochloric acid to produce hydrogen gas.

(b)Name one metal which does not react with dilute hydrochloric acid.

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.

Q. Metals generally react with dilute acids to produce hydrogen gas. Which one of the following metals does not react with dilute hydrochloric acid?

Q. From given metals select the metal which does not react with dilute hydrochloric acid.

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