Question

Observe the diagram and answer the following questions:- [5]

1. Which experiment is this?

2. State what is added through thistle funnel ‘Y’

3. Complete apparatus should be air tight.Why?

4. Give a balanced equation for above process.​

Answer 1

Answer:

1. This experiment is showing the formation of hydrogen when metal is added to a acid

Acid + Metal ----- salt + Hydrogen gas

2. HCl must be added into the test tube

3. Yes , the apparatus must be air tight because hydrogen gas must not be leaked

4. Zn(s) + 2HCL(aq) -----------ZnCl2(aq) + H2(g)

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Answer 2

Answer:

2. thistle funnel

3 to prevent explosion

4 Zn(s)+ H² SO⁴( dil.) gives. ZnSO⁴( aq)+ H²( g)

1 hydrogen gas laboratory prepration