how will you confirm that the evolved gas formed in the reaction between sodium and water is hydrogen?

Open in App

Solution

Sodium metal reacts rapidly with water to form a colourless basic solution of sodium hydroxide (NaOH) and hydrogen gas (H2).

Na + 2 H2O ----> 2NaOH + H2

Hydrogen gas can be confirmed by bringing burning matchstick near the test tube. It produces a pop sound which confirm the evolution of hydrogen gas.

Regards

Suggest Corrections

Similar questions

Question 47
A salt X is formed and gas is evolved when ethanoic acid reacts with sodium hydrogen carbonate. Name the salt X and the gas evolved. Describe an activity and draw the diagram of the apparatus to prove that the evolved gas is one which you have named. Also, write chemical equation of the reaction involved.

Sodium metal reacts vigorously with water.

(a) Name the gas evolved when sodium reacts with water.

(b) State whether the solution formed by the reaction of sodium with water is acidic or basic.

Q. Statement I:- Hydrogen gas is not evolved when zinc reacts with cold water.

Statement II:- Sodium reacts vigorously with cold water to produce sodium hydroxide and hydrogen gas.

Q. When a piece of sodium metal is dropped in water, hydrogen gas evolved because:

Q. When ethanoic acid reacts with sodium hydrogen carbonate, a salt

X

is formed and a gas

Y

is evolved. Identify

X

and

Y

. Write chemical equation of reaction involved:

Join BYJU'S Learning Program