Name the gas evolved when a metal reacts with water.

Academic Chemistry NCERT Class 8

Metals react with water to produce hydrogen gas.

Example: sodium metal reacts with water to form sodium hydroxide and hydrogen gas.

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Updated on: 10-Oct-2022

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Name the gas evolved when a metal reacts with a dilute acid.
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.
Give reasons: Hydrogen gas is not evolved when a aluminium metal reacts with nitric acid.
A gas is evolved when ethanol reacts with sodium. Name the gas evolved and also write the balanced chemical equation of the reaction involved.
Name the gas evolved when dilute HCl reacts with sodium hydro-carbonate. How is it recognized?
Which gas is usually liberated when an acid reacts with a metal?
Name the gas which is liberated when an acid reacts with a metal. Illustrate with an example. How will you test the presence of this gas?
Which of the following will be required to identify the gas evolved when dilute hydrochloric acid reacts with zinc metal?(a) Red litmus paper(b) pH paper(c) Lime water(d) A burning splinter
The metal X reacts with dilute hydrochloric acid to form a gas Y. The metal X also reacts with sodium hydroxide solution (on heating) to form the same gas Y. When a lighted matchstick is applied, this gas burns by producing a ‘pop’ sound.(a) Name two metals which could behave like X(b) Name the gas Y
(a) What happens when an acid reacts with a metal? Give chemical equation of the reaction involved.(b) Which gas is usually liberated when an acid reacts with a metal? How will you test for the presence of this gas?
Name two metals which react violently with cold water. Write any three observations you would make when such a metal is dropped into water. How would you identify the gas evolved, if any, during the reaction?
(a) Name one metal which reacts with dilute hydrochloric acid to produce hydrogen gas.(b) Name one metal which does not react with dilute hydrochloric acid.
When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved, which is utilised in the hydrogenation of oil. Name the gas evolved. Write the chemical equation of the reaction involved and also write a test to detect the gas formed.
(a) Name the chemical compound which is electrolysed in molten state to obtain aluminium metal. Which gas is evolved during this process?(b) Name the chemical compound which is electrolysed in molten state to obtain sodium metal. Which gas is produced in this process ? (c) Name the gas produced when calamine ore is calcined. (d) Name the gas evolved when cinnabar ore is roasted.
When ethanoic acid is treated with NaHCO3, the gas evolved is

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