Which gas is usually liberated when an acid reacts with a metal? Illustrate with an example. How wil

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2. Acids, Bases and Salts

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Which gas is usually liberated when an acid reacts with a metal? Illustrate with an example. How will you test for the presence of this gas ?

Option A

Option B

Option C

Option D

Solution

Hydrogen gas is usually liberated when an acid reacts with a metal.

Take few pieces of zinc granules and add $5\,ml$ of dilute $H_2SO_4$. Shake it and pass the gas produced into a soap solution. The bubbles of the soap solution are formed. These soap bubbles contain hydrogen gas.

$2{H_2}S{O_4}\, + \,Zn\, \to Zn{(S{O_4})_2}\, + \,2{H_2} \uparrow $

We can test the evolved hydrogen gas by its burning with a pop sound when a candle is brought near the soap bubbles.

Standard 10

Science

Equal lengths of magnesium ribbons are taken in test tubes $A$ and $B$. Hydrochloric acid $(HCl)$ is added to test tube $A$, while acetic acid $(CH_3COOH)$ is added to test tube $B$. Amount and concentration taken for both the acids are same. In which test tube will the fizzing occur more vigorously and why ?

medium

Plaster of Paris should be stored in a moisture-proof container. Explain why ?

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Metal compound $A$ reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.

medium

Write word equations and then balanced equations for the reaction taking place when –

$(a)$ dilute sulphuric acid reacts with zinc granules.

$(b)$ dilute hydrochloric acid reacts with magnesium ribbon.

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Name the sodium compound which is used for softening hard water.

easy

Which gas is usually liberated when an acid reacts with a metal? Illustrate with an example. How will you test for the presence of this gas ?

Solution

Similar Questions

Plaster of Paris should be stored in a moisture-proof container. Explain why ?

Metal compound $A$ reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.

Write word equations and then balanced equations for the reaction taking place when – $(a)$ dilute sulphuric acid reacts with zinc granules. $(b)$ dilute hydrochloric acid reacts with magnesium ribbon.

Name the sodium compound which is used for softening hard water.

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Write word equations and then balanced equations for the reaction taking place when –

$(a)$ dilute sulphuric acid reacts with zinc granules.

$(b)$ dilute hydrochloric acid reacts with magnesium ribbon.