Which metal becomes black in the presence of hydrogen sulphide gas in air?

Academic Chemistry NCERT Class 10

Silver metal becomes black in the presence of hydrogen sulphide gas in the air. Silver(Ag) reacts with hydrogen sulphide gas in the air and forms a thin black layer of silver sulphide on it.

Tutorialspoint

Simply Easy Learning

Updated on: 10-Oct-2022

59 Views

Silver tarnishes due to (nitrogen oxides/hydrogen sulphide) in the air.
A metal that exists as a liquid at room temperature is obtained by heating its sulphide in the presence of air. Identify the metal and its ore and give the reaction involved.
The metal which will not produce hydrogen gas on reacting with dilute sulphuric acid is:sodiumsilverironzinc
A metal which exists as a liquid at room temperature is obtained by heating its sulphide ore in the presence of air.(a) Name the metal and write its chemical symbol. (b) Write the name and formula of the sulphide ore. (c) Give the equations of chemical reactions involved in the production of metal from its sulphide ore. (d) Name a common device in which this metal is used. (e) Can this metal displace copper from copper sulphate solution? Why?
Translate the following statements into chemical equations and then balance them.(a) Hydrogen gas combines with nitrogen to form ammonia.(b) Hydrogen sulphide gas burns in air to give water and sulphur dioxide.(c) Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.(d) Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.
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 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?
Name the gas in air which tarnishes silver articles slowly.
A shiny brown coloured element ‘X’ on heating in the air becomes black in colour. Name the element ‘X’ and the black coloured compound formed.
A set of metals in order of their increasing chemical reactivity is given below : silver, copper, lead, iron, zinc, magnesium and sodium.Which of the above metals is stored in kerosene ?Which metals will react with cold water ?Which gas will be liberated when metals react with cold water ?Which of the metals will react with oxygen when heated ?Which of the metals become black in the presence of hydrogen sulphide ?
When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is obtained and the sulphuric acid so formed remains in the solution. The reaction is an example of a :Combination reactionDisplacement reactionDecomposition reactionDouble displacement reaction
The metal which produces hydrogen gas on reaction with dilute hydrochloric acid as well as sodium hydroxide solution iscopperironaluminiumsodium
A red-brown metal X forms a salt XSO4. When hydrogen sulphide gas is passed through an aqueous solution of XSO4, then a black precipitate of XS is formed along with sulphuric acid solution.(a) What could the salt XSO4 be?(b) What is the colour of salt XSO4?(c) Name the black precipitate XS.(d) By using the formula of the salt obtained in (a) above, write an equation of the reaction which takes place when hydrogen sulphide gas is passed through its aqueous solution.(e) What type of chemical reaction takes place in this case?
(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.
Which gas Is Produced By The Reaction Of Metal With Acid?

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements