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 ?
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 ?
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.
Similar Questions
Write an equation to show the reaction between Plaster of Paris and water.
Write an equation to show the reaction between Plaster of Paris and water.
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.
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.
Why does an aqueous solution of an acid conduct electricity?
Why does an aqueous solution of an acid conduct electricity?
Under what soil condition do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate) ?
Under what soil condition do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate) ?
Name the sodium compound which is used for softening hard water.
Name the sodium compound which is used for softening hard water.