Advertisements
Advertisements
Question
Give a chemical test to distinguish between the following gases.
HCl and H2S
Advertisements
Solution
| Hydrogen chloride | Hydrogen sulphide |
| Odour of gas: Pungent choking odour. | Odour of gas: Smell as of rotten eggs. |
APPEARS IN
RELATED QUESTIONS
Define catalyst.
Fill in the blank:
During a chemical reaction transfer of ________ takes place.
What do you observe? When
Water is added to the quick lime.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A coloured substance which leaves on strong heating a black residue and evolves two colourless gases one of which is acidic and the other neutral.
Complete the table given below.
| Heat on copper carbonate | Test for gas evolved |
State the following reaction represent oxidation or reduction.
\[\ce{Cu++->Cu}\]
A thick coating of a paste of Plaster of Paris (POP) is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilised. Can the change in POP be reversed?
Chemists identify gypsum as a natural indicator.
Heat may evolve or be absorbed during a ______ change.
Explain how the painting of an iron gate prevents it from rusting.
