Advertisements
Advertisements
प्रश्न
What do you observe when H2S is passed through a lead nitrate solution.
Advertisements
उत्तर
When gas is passed to lead nitrate solution it also turns black.
\[\ce{\underset{\text{(colourless)}}{Pb(NO3)2} + H2S -> \underset{\text{(Black)}}{PbS} + 2HNO3}\]
APPEARS IN
संबंधित प्रश्न
TRUE \ FALSE
Ammonia is a good oxidizing agent.
State four conditions necessary for chemical reactions to take place.
Write true or false :
No new substance is formed during a chemical reaction.
Give an example of a reaction where the following are involved
Light
What do you understand by precipitation reaction? Explain with examples.
Give reason for the following:
A characteristic change of colour is seen when a piece of iron is added to copper [II] sulphate solution.
Give reason for the following:
The catalytic oxidation of sulphur dioxide to sulphur trioxide is represented by a double arrow {⇌}
between the reactants and products, formed in the chemical reaction.
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 white solid which evolves two colourless gases which on cooling combine and condense on the cooler parts of the test tube.
A reaction between an acid and a base is called ______.
Which is used as a catalyst during the process of hydrogenation of oils?
