Question

Equal length of magnesium ribbon are taken in two test tubes A and B . H2SO4 is added to test tube A and H2CO3 in the test tube B in equal amounts. a. Identify the test tube showing vigorous reaction.
b. Give reason to support your answer.
c. Name the gas liberated in both the test tubes.
d. How will you prove its liberation?
e. Out of the two acids taken above, 1. Which one will have lower pH value?
2. lower H+ concentration respectively.

Answer 1

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a. The test-tube showing vigorous reaction will be test-tube A that contains H₂SO₄

b. Since H₂SO₄ is more reactive and acidic than H₂CO₃, the reaction is vigorous

c. H₂ gas is liberated when Mg reacts with both the acids

d. By placing a matchstick, which will burn with a pop sound when the gas is liberated

1. Lower pH value ans 2. Lower H⁺ concentration: H₂CO₃

Answer 2

A) H2SO4
B)it’s exothermic reaction
C)H2 gas andH2 and CO2
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