Sure! Let's solve this step by step.
### (a) Naming X and Y
Based on the provided information, we need to identify:
- Metal X, which reacts with hydrochloric acid to produce a gas Y that burns with a 'pop' sound.
- The same gas Y is formed when metal X reacts with sodium hydroxide solution upon heating.
Identification of Metal X:
- The description suggests that metal X reacts with hydrochloric acid (HCl) to release a gas that burns with a 'pop' sound.
- This gas is identified as hydrogen gas (H2), which is known to produce a 'pop' sound when it burns.
- Hence, X must be a metal that can release hydrogen gas upon reacting with HCl and also with sodium hydroxide (NaOH) upon heating.
A common metal that fits this description is Zinc (Zn). Therefore, metal X is Zinc.
Identification of Gas Y:
- As indicated by the characteristics described, the gas produced is hydrogen gas.
- Therefore, gas Y is Hydrogen gas (H2).
So, the names are:
- X = Zinc (Zn)
- Y = Hydrogen gas (H2)
### (b) Writing the Chemical Equations
(i) The reaction of metal X (Zinc) with hydrochloric acid:
- Zinc reacts with hydrochloric acid to form zinc chloride and hydrogen gas.
- The balanced chemical equation is:
[tex]\[
\text{Zn} + 2\text{HCl} \rightarrow \text{ZnCl}_2 + \text{H}_2
\][/tex]
(ii) The reaction of metal X (Zinc) with sodium hydroxide solution (on heating):
- Zinc reacts with sodium hydroxide solution in the presence of water (on heating) to form sodium zincate and hydrogen gas.
- The balanced chemical equation is:
[tex]\[
\text{Zn} + 2\text{NaOH} + 2\text{H}_2\text{O} \rightarrow \text{Na}_2[\text{Zn(OH)}_4] + \text{H}_2
\][/tex]
### Final Solution:
(a) Name X and Y:
- X: Zinc (Zn)
- Y: Hydrogen gas (H2)
(b) Chemical equations for the reactions:
- (i) With hydrochloric acid:
[tex]\[
\text{Zn} + 2\text{HCl} \rightarrow \text{ZnCl}_2 + \text{H}_2
\][/tex]
- (ii) With sodium hydroxide solution:
[tex]\[
\text{Zn} + 2\text{NaOH} + 2\text{H}_2\text{O} \rightarrow \text{Na}_2[\text{Zn(OH)}_4] + \text{H}_2
\][/tex]
