Question

What are the gases liberated when dilute hydrochloric acid reacts with
zinc
ii)
zinc carbonate.
it is 4marks
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Answer 1

Answer:

1) Hydrogen

2) Hydrogen and Carbon dioxide

Experiment: .

• Bring a burning match stick near the mouth of the test tube

• Also pass the gas through lime water Ca(OH)2.

• Take a wet blue litmus and red litmus paper and bring it into the contact of HCL gas.

Observations:

• When the matchstick is brought near the test tube , we can hear a pop sound. This indicates it is Hydrogen gas.

• On passing the gas through the lime water, the lime water becomes milky. This shows the presence of Co2

• The wet blue litmus remains blue , whereas the red turns into blue. This indicates that HCL gas in Basic.

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