Medium
State three applications of a decomposition reaction.
(N/A) Applications of a decomposition reaction:
$(a)$ White silver chloride turns grey in sunlight due to the decomposition of silver chloride into silver and chlorine.
$2 AgCl (s) \xrightarrow{\text{sunlight}} 2 Ag (s) + Cl_2 (g)$
This reaction is used in black and white photography.
$(b)$ Potassium chlorate $(KClO_3)$ decomposes on heating to produce oxygen gas.
$2 KClO_3 (s) \xrightarrow{\text{heat}} 2 KCl (s) + 3 O_2 (g)$
This is a common laboratory method for the preparation of oxygen gas.
$(c)$ Quicklime $(CaO)$ is prepared by the thermal decomposition of calcium carbonate ($CaCO_3$,limestone).
$CaCO_3 (s) \xrightarrow{\text{heat}} CaO (s) + CO_2 (g)$
Quicklime is used in the manufacture of cement and for preparing slaked lime used in whitewashing.
$(a)$ White silver chloride turns grey in sunlight due to the decomposition of silver chloride into silver and chlorine.
$2 AgCl (s) \xrightarrow{\text{sunlight}} 2 Ag (s) + Cl_2 (g)$
This reaction is used in black and white photography.
$(b)$ Potassium chlorate $(KClO_3)$ decomposes on heating to produce oxygen gas.
$2 KClO_3 (s) \xrightarrow{\text{heat}} 2 KCl (s) + 3 O_2 (g)$
This is a common laboratory method for the preparation of oxygen gas.
$(c)$ Quicklime $(CaO)$ is prepared by the thermal decomposition of calcium carbonate ($CaCO_3$,limestone).
$CaCO_3 (s) \xrightarrow{\text{heat}} CaO (s) + CO_2 (g)$
Quicklime is used in the manufacture of cement and for preparing slaked lime used in whitewashing.
Explore More
Similar Questions
Can oxidation or reduction take place alone? Why or why not? What are such reactions called?
Medium
View SolutionWrite the chemical equation of the reaction with an example in which a change in colour takes place.
Medium
View SolutionOn heating blue coloured powder of copper $(II)$ nitrate in a boiling tube,copper oxide (black),oxygen gas and a brown gas $X$ is formed.
$(a)$ Write a balanced chemical equation of the reaction.
$(b)$ Identify the brown gas $X$ evolved.
$(a)$ Write a balanced chemical equation of the reaction.
$(b)$ Identify the brown gas $X$ evolved.
Medium
View SolutionState what happens when:
$(a)$ Chlorine gas is passed through dry slaked lime.
Also write the chemical equation in each case.
$(a)$ Chlorine gas is passed through dry slaked lime.
Also write the chemical equation in each case.
Medium
View Solution$A, B$ and $C$ are three elements which undergo chemical reactions according to the following equations:
$A_{2}O_{3} + 2B \rightarrow B_{2}O_{3} + 2A$
$3CSO_{4} + 2B \rightarrow B_{2}(SO_{4})_{3} + 3C$
$3CO + 2A \rightarrow A_{2}O_{3} + 3C$
Answer the following questions with reasons:
$(a)$ Which element is the most reactive?
$(b)$ Which element is the least reactive?
$(c)$ What is the type of reactions listed above?
$A_{2}O_{3} + 2B \rightarrow B_{2}O_{3} + 2A$
$3CSO_{4} + 2B \rightarrow B_{2}(SO_{4})_{3} + 3C$
$3CO + 2A \rightarrow A_{2}O_{3} + 3C$
Answer the following questions with reasons:
$(a)$ Which element is the most reactive?
$(b)$ Which element is the least reactive?
$(c)$ What is the type of reactions listed above?
Difficult
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo