Advertisements
Advertisements
प्रश्न
Write one equation for decomposition reactions where energy is supplied in the form of light.
Advertisements
उत्तर
Decomposition reaction involving absorption of light,
- \[\ce{\ce{\underset{Hydrogen peroxide}{2H2O2_{(l)}}}->[Light] \underset{Water}{2H2O_{(l)}} + \underset{Oxygen}{O2_{(g)}}}\]
- \[\ce{2AgCl_{(s)} ->[sunlight] 2Ag_{(s)} + Cl2_{(g)}}\]
संबंधित प्रश्न
Write one equation for decomposition reactions where energy is supplied in the form of heat.
Rewrite the following statements by selecting the correct options:
\[\ce{CaCO3 ->[\Delta] CaO + CO2 ^}\] is a __________ reaction.
What type of reaction is represented by the following equation?
2 FeSO4 → Fe2 O3 + SO2 + SO3
What type of chemical reaction take place when lime-stone is heated?
What type of chemical reaction take place when electricity is passed through water?
When a green iron salt is heated strongly, its colour finally changes to brown and odour of burning sulphur is given out.
(a) Name the iron salt.
(b) Name the type of reaction that takes place during the heating of iron salt.
(c) Write a chemical equation for the reaction involved.
Explain the following type of chemical reaction, giving two examples for it:
Decomposition reaction
Give a scientific reason.
When the gas formed on heating limestone is passed through freshly prepared lime water, the lime water turns milky.
Study the following figure and answer questions.

a) After heating Calcium carbonate, which gas is formed in a test tube?
b) When we pass this gas through limewater what change, did you observe?
c) Write down the chemical reaction showing the product formation after heating the Calcium carbonate.
(a) Design an activity to demonstrate the decomposition reaction of lead nitrate.
(b) Draw labelled diagram of the experimental set-up. List two main observations.
(c) Write balanced chemical equation for the reaction stating the physical state of the reactant and the products.
How can the rate of the chemical reaction, namely, decomposition of hydrogen peroxide be increased?
Classify the following reaction into different type:
\[\ce{2KClO3(s)->[\Delta] 2KCl(aq) + 3O2(g)}\]
Give a balanced equation for the following type of reaction:
A thermal decomposition reaction in which a compound decomposes to give two new compounds.
Explain the reaction given in the figure.

Electrolysis is type of ______ reaction.
Balance the following chemical equation and identify the type of chemical reaction.
`"H"_2"O"_2("l") overset("U V")(->) "H"_2"O"("l") + "O"_2("g")`

- Identify the gasses evolved at the anode and cathode in the above experimental set up.
- Name the process that occurs. Why is it called so?
- Illustrate the reaction of the process with the help of a chemical equation.
What is observed when silver chloride is exposed to sunlight? Give the type of reaction involved.
Write one equation for decomposition reactions where energy is supplied in the form of electricity.
