हिंदी

Give one example of a decomposition reaction which is carried out with electricity.

Advertisements
Advertisements

प्रश्न

Give one example of a decomposition reaction which is carried out with electricity.

लघु उत्तरीय
Advertisements

उत्तर

When an electric current is passed through acidified water, it decomposes to give hydrogen gas and oxygen gas. This reaction can be represented as:

\[\ce{\underset{Water}{2H2O_{(l)}} ->[Electricity][(Decomposition)] \underset{Hydrogen}{2H2_{(g)}} + \underset{Oxygen}{O2_{(g)}}}\]

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Chemical Reactions and Equations - Exercise 2 [पृष्ठ ६०]

APPEARS IN

लखमीर सिंग Chemistry Part 2 [English] Class 10
अध्याय 1 Chemical Reactions and Equations
Exercise 2 | Q 10. (a) | पृष्ठ ६०

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

Why are decomposition reactions called the opposite of combination reactions? Write equations for these reactions.


Write one equation for decomposition reactions where energy is supplied in the form of heat.


Taking into consideration the relationship in the first pair, complete the second pair

2H2 + O2 → 2H2O :Combination Reaction :: 2HgO → 2Hg + O2:_________


What type of reaction is represented by the digestion of food in our body?


What type of chemical reaction is used to extract metals from their naturally occurring compounds like oxides or chlorides?


When a green iron salt is heated strongly, its colour finally changes to brown and odour of burning sulphur is given out.

  1. Name the iron salt.
  2. Name the type of reaction that takes place during the heating of iron salt.
  3. Write a chemical equation for the reaction involved.

Classify the following reaction as combination, decomposition, displacement, precipitation and neutralization. Also balance the equation.

\[\ce{Zn_{(s)} + H2SO4 -> ZnSO4_{(s)} + H2_{(g)}}\]


What is a redox reaction? Explain with an example.


Answer the following question.
2 g of silver chloride is taken in a china dish and the china dish is placed in sunlight for some time. What will be your observation in this case? Write the chemical reaction involved in the form of a balanced chemical equation. Identify the type of chemical reaction.


Explain the reaction given in the figure.


Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is:


Give the ratio in which hydrogen and oxygen are present in water by volume.


Which among the following statement(s) is (are) true?

Exposure of silver chloride to sunlight for a long duration turns grey due to

(i) the formation of silver by decomposition of silver chloride.

(ii) sublimation of silver chloride.

(iii) decomposition of chlorine gas from silver chloride.

(iv) oxidation of silver chloride.


Which of the following is an endothermic process?


Marble statues are corroded or stained rain water. Identify the main reason.


A metal nitrate 'A' on heating gives a metal oxide along with evolution of a brown coloured gas 'B' and a colourless gas, which helps in burning. Aqueous solution of 'A' when reacted with potassium iodide forms a yellow precipitate.

  1. Identify 'A' and 'B'
  2. Name the types of the reactions involved in the above statement.

Write the molecular formula of calcium carbonate.


A solution of a substance ‘X’ is used for whitewashing.

  1. Name the substance ‘X’ and write its formula.
  2. Write the reaction of the substance ‘X’ named in the above formula with water.

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×