Advertisements
Advertisements
Question
A student wants to study a decomposition reaction by taking ferrous sulphate crystals. Write two precautions he must observe while performing the experiment.
Advertisements
Solution
Precautions for the decomposition reaction of reffous sulphate crystals.
\[\ce{\underset{\text{(Light Green)Feffous sulphate crystals}}{FeSO4.7H2O} ->[\Delta] \underset{\text{(white)Anhydrous ferrous sulphage}}{FeSO4} ->[\Delta] \underset{\text{(Brown)Ferric Oxide}}{Fe2O3} + SO2 + SO3}\]
(1) The mouth of the boiling tube should not be at pointed.
(2) Waft gases are emitted from FeSO4 on heating . The gases SO2 and SO3 are very harmful , so deep breath should not be taken when smelling the odour of the gases .
(3) Test tube holder must be used while heating the test tube.
APPEARS IN
RELATED QUESTIONS
Why are decomposition reactions called the opposite of combination reactions? Write equations for these reactions.
What do you mean by redox reaction ? Explain with the help of an example.
What does one mean by endothermic reaction? Give example.
How can the rate of the chemical reaction, namely, decomposition of hydrogen peroxide be increased?
Give a balanced equation for –
An electrolytic decomposition reaction involving a neutral liquid
Give a balanced equation for –
A white precipitate obtained during a double decomposition reaction involving a silver salt with sodium salt.
Differentiate between the following:
Thermal decomposition and thermal dissociation.
On heating blue coloured powder of copper (II) nitrate, in a boiling tube, copper oxide (black), oxygen gas and a brown gas X is formed
- Write a balanced chemical equation of the reaction.
- Identify the brown gas X evolved.
- Identify the type of reaction.
- What could be the pH range of aqueous solution of the gas X?
Write one equation for decomposition reactions where energy is supplied in the form of light.
