Advertisements
Advertisements
Question
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to sodium sulphite.
Advertisements
Solution
Sodium sulphite when reacting with dil. `"H"_2"SO"_4` evolves gas `"SO"_2`.
\[\ce{Na2SO3 + H2SO4 [dil.]->Na2SO4 + H2O + SO2 (g)}\]
APPEARS IN
RELATED QUESTIONS
Complete and balance the following chemical equations:
`"H"_2"S"` + `"CI"_2` `→`
What do you observe when iron nail is kept in copper sulphate solution for sometime.
How is precipitate formation in a chemical reaction indicated?
A chemical equation is a statement that describes a chemical change in terms of
Explain the term ‘chemical reaction’ with special reference to – ‘reactants’ and ‘products’.
Give reason for the following:
Electrolytic decomposition of water is a reaction involving change of state.
A chemical reaction is often accompanied by external indications or characteristics which include –
- Colour change
- Effervescence or gas evolved
- Evolution or absorption of heat
- Formation of a precipitate.
With reference to each of the above indications, state the external indication seen during – Thermal decomposition of mercury [II] oxide.
The chemical change is ______.
Explain the following statement: Digestion is a chemical change.
Photosynthesis is a chemical reaction that takes place in the presence of ______.
