Advertisements
Advertisements
प्रश्न
Identify the gas evolved and give the chemical test in the following case:
Dilute hydrochloric acid reacts with iron (II) sulphide.
Advertisements
उत्तर
Gas Evolved: When dilute hydrochloric acid reacts with iron (II) sulphide, the gas evolved is hydrogen sulphide.
Reaction:
\[\ce{FeS + 2HCl -> FeCl2 + H2S ^}\]
Chemical Test for Hydrogen Sulphide: To test for H2S gas, you can use lead acetate paper:
- Moisten a strip of lead acetate paper.
- Expose it to the gas that evolved.
Observation: If H2S is present, the lead acetate paper will turn black due to the formation of lead sulphide (PbS).
\[\ce{Pb(C2H3O2)2 + H2S -> PbS + 2CH3COOH}\]
संबंधित प्रश्न
Write a balanced chemical equation for the following:
Action of concentrated sulphuric acid on Sulphur.
A, B, C, and D summarize the properties of sulphuric acid depending on whether it is dilute or concentrated.
A = Typical acid property
B = Non volatile acid
C = Oxidizing agent
D = Dehydrating agent
Choose the property (A, B, C or D) depending on which is relevant to each of the following
1) Preparation of Hydrogen chloride gas
2) Preparation of Copper sulphate from copper oxide.
3) An action of conc. Sulphuric acid on Sulphur.
Which property of sulphuric acid is shown by the reaction of the concentrated sulphuric acid with Ethanol?
Name the following:
The precipitate obtained by treating carbon with hot concentrated sulphuric acid.
How are the following conversion brought about? Give equation and condition:
Oxalic acid to carbon monoxide.
Give examples of the use of sulphuric acid as
An oxidizing agent
Choose the current answer from the options given below :
The catalyst used for the oxidation of SO2 to SO3 in contact process is
Write balanced chemical equation to show :
The oxidizing action of conc.sulphuric acid on carbon
Dilute hydrochloric acid and dilute sulphuric acid are both colourless solutions. How will the addition of barium chloride solution to each help to distinguish between the two?
State your observation of the following case:
When dilute hydrochloric acid is added to sodium carbonate crystals.
