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प्रश्न
What is observed when silver chloride is exposed to sunlight? Give the type of reaction involved.
What happens when silver chloride is exposed to sunlight? Write balanced chemical equations to support your answer.
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उत्तर
White silver chloride turns grey in sunlight when it is exposed to sunlight. This results from the light-induced breakdown of silver chloride into grey silver and chlorine.
\[\ce{2AgCl_{(s)} ->[Sunlight] 2Ag_{(s)} + Cl2_{(g)}}\]
This is a type of decomposition reaction.
Notes
Students should refer to the answer according to their questions.
संबंधित प्रश्न
Decomposition reactions require energy either in the form of heat or light or electricity for breaking down the reactants. Write one equation each for decomposition reactions where energy is supplied in the form of heat, light and electricity
The white solid compound A decomposes quite rapidly on heating in the presence of a black substance X to form a solid compound B and a gas C. When an aqueous solution of compound B is reacted with silver nitrate solution, then a white precipitate of silver chloride is obtained along with potassium nitrate solution. Gas C does not burn itself but helps burn other things.
(a) What is compound A?
(b) What is compound B?
(c) What is gas C?
(d) What do you think is the black substance X? What is its function?
(e) What is the general name of substances like X?
What type of chemical reaction take place when electricity is passed through water?
What is a decomposition reaction?
Explain the following type of chemical reaction, giving two examples for it:
Decomposition reaction
Give a balanced equation for the following type of reaction:
A thermal decomposition reaction in which a metallic nitrate decomposes to give – a basic oxide.
When SO2 gas is passed through a saturated solution of H2S, which of the following reaction occurs?
When lead nitrate is heated strongly in a boiling tube, two gases are liberated and a solid residue is left behind in the test tube.
- Name the type of chemical reaction and define it.
- Write the name and formula of the coloured gas liberated.
- Write the balanced chemical equation for the reaction.
- Name the residue left in the test tube and state the method of testing its nature (acidic/basic).
Write one equation for decomposition reactions where energy is supplied in the form of light.
