Advertisements
Advertisements
प्रश्न
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to sodium sulphite.
Advertisements
उत्तर
Sodium sulphite when reacting with dil. `"H"_2"SO"_4` evolves gas `"SO"_2`.
\[\ce{Na2SO3 + H2SO4 [dil.]->Na2SO4 + H2O + SO2 (g)}\]
APPEARS IN
संबंधित प्रश्न
Define the following term:
Precipitate
Give an example of a reaction where the following are involved
Pressure
Select the correct answer for the following options:
The basic gas obtained when two gases react in presence of a catalyst and the reaction is exothermic.
Give reason for the following:
Even though rusting is an exothermic reaction, the heat evolved when an iron nail rusts is unnoticeable.
Give balanced equation for the following conversion affected by heat alone on the substance:
Copper nitrate to nitrogen dioxide
Limestone contains ______ mainly.
Chemical change is a temporary change.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Can you change rust back into iron by some simple method?
How would you show that the settling of curd is a chemical change?
When milk is mixed with coffee decoction, the colour of milk and decoction changes due to ______.
