Advertisements
Advertisements
Questions
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.
Advertisements
Solution
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.
RELATED QUESTIONS
A solid substance P which is very hard is used in the construction of many buildings, especially flooring. When substance P is heated strongly, it decomposes to form another solid Q and a gas R is given out. Solid Q reacts with water with the release of a lot of heat to form a substance S. When gas R is passed into a clear solution of substance S, then a white precipitate of substance T is formed. The substance T has the same chemical composition as starting substance P.
- What is substance P? Write its common name as well as chemical formula.
- What is substance Q?
- What is gas R?
- What is substance S? What is its clear solution known as?
- What is substance T? Name any two natural forms in which substance T occurs in nature.
Give one example of a decomposition reaction which is carried out with electricity.
What type of chemical reaction takes place when limestone is heated?
A metal salt MX when exposed to light splits up to form metal M and a gas X2. Metal M is used in making ornaments whereas gas X2 is used in making bleaching powder. The salt MX is itself used in black and white photography.
- What do you think metal M is?
- What could be gas X2?
- Name the metal salt MX.
- Name any two salt solutions which on mixing together can produce a precipitate of salt MX.
- What type of chemical reaction takes place when salt MX is exposed to light? Write the equation of the reaction.
A student wants to study a decomposition reaction by taking ferrous sulphate crystals. Write two precautions he must observe while performing the experiment.
Classify the following reaction into –
- Direct combination
- Decomposition
- Displacement
- Double decomposition
The reaction is – Zinc hydroxide on heating gives zinc oxide and water.
Give a balanced equation for –
A double decomposition neutralization reaction involving an acid and a base
What is electrolysis?
Complete the following reaction:
\[\ce{C_12H_22O11->[Heat]}\] ______ + ______.
Write one equation for the decomposition reaction where energy is supplied in the form of light.
