Zinc liberates hydrogen gas when reacted with dilute hydrochloric acid, whereas copper does not. Explain why?

Academic Chemistry NCERT Class 10

Zinc is more reactive than copper as Zinc is placed above Hydrogen and Copper is placed below hydrogen in the activity series of metals. Due to this reason, Zinc reacts with HCl whereas Copper will not react.

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Updated on: 10-Oct-2022

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(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.
Metals generally react with dilute acids to produce hydrogen gas. Which one of the following metals does not react with dilute hydrochloric acid?MagnesiumAluminiumIronCopper
(a)Explain why, metals usually do not liberate hydrogen gas with dilute nitric acid.(b)Name two metals which can, however, liberate hydrogen gas from very dilute nitric acid.
Write word equations and then balanced equations for the reactions taking place when :(a) dilute sulphuric acid reacts with zinc granules.(b) dilute hydrochloric acid reacts with magnesium ribbon.(c) dilute sulphuric acid reacts with ammonium powder.(d) dilute hydrochloric acid reacts with iron filings.solution
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(c) dilute sulphuric acid reacts with aluminium powder(d) dilute hydrochloric acid reacts with iron filing.
The metal which will not produce hydrogen gas on reacting with dilute sulphuric acid is:sodiumsilverironzinc
The metal which produces hydrogen gas on reaction with dilute hydrochloric acid as well as sodium hydroxide solution iscopperironaluminiumsodium
Name the gas produced when aluminium foil reacts with:(a) dilute hydrochloric acid.(b) Sodium Hydroxide solution.
Which gas is produced when dilute hydrochloric acid is added to a reactive metal? Write the chemical reaction when iron reacts with dilute H2SO4.
Name the gas evolved when zinc granules are treated/heated with:(a) Hydrochloric acid solution(b) Sodium hydroxide solution
When dilute hydrochloric acid is added to granulated zinc placed in a test tube, the observation made is:
Give reasons: Hydrogen gas is not evolved when a aluminium metal reacts with nitric acid.
(a) What happens when dilute hydrochloric acid is added to sodium carbonate? Write balanced equation of the reaction involved.(b) Which gas is liberated when dilute hydrochloric acid reacts with sodium carbonate? How will you test for the presence of this gas?
Name the gas evolved when a metal reacts with a dilute acid.
Explain why, ethene decolourises bromine water whereas ethane does not.

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