Write one equation each for decomposition reactions where energy is supplied in form of heat, light

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1. Chemical Reactions and Equations

hard

Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.

Option A

Option B

Option C

Option D

Solution

$(a)$ Thermal decomposition :

$\underset{Ferrous\,\,sulphate}{\mathop{2FeS{{O}_{4}}}}\,\,\xrightarrow{\Delta }$$\mathop {F{e_2}{O_{3(s)}}}\limits_{Ferric\,\,\,oxide} \, + \mathop {\,S{O_{2(g)}}}\limits_{Sulphur{\text{ }}dioxide\;} \, + \mathop {\,S{O_{3(g)}}}\limits_{Sulphur{\text{ }}trioxide} $

$(b)$ Decomposition by light :

$2AgC{l_{(s)}}\;\xrightarrow{{{\text{ Light }}}}\mathop {2A{g_{(s)}}}\limits_{Silver} + \mathop {C{l_{2(g)}}}\limits_{Chlorine} $

$(c)$ Decomposition by electricity :

$\mathop {2A{l_2}{O_{3(aq)}}}\limits_{Aluminium{\text{ }}oxide} \xrightarrow{{{\text{ Electricity }}}}\mathop {\;{\kern 1pt} 4A{l_{(s)}}}\limits_{Aluminium} + \mathop {3{O_{2(g)}}}\limits_{Oxygen} $

Standard 10

Science

$Fe _{2} O _{3}+2 Al \rightarrow Al _{2} O _{3}+2 Fe$

The above reaction is an example of a

easy

Why does the colour of copper sulphate solution change when an iron nail is dipped in it ?

medium

In the refining of silver, the recovery of silver from silver nitrate solution involved displacement by copper metal. Write down the reaction involved.

medium

What is a balanced chemical equation ? Why should chemical equations be balanced ?

medium

Write the balanced equation for the following chemical reactions.

$(i)$ Hydrogen $+$ Chlorine $\to $ Hydrogen chloride

$(ii)$ Barium chloride $+$ Aluminium sulphate $\to $ Barium sulphate $+$ Aluminium chloride

$(iii)$ Sodium $+$ Water $\to $ Sodium hydroxide $+$ Hydrogen

medium

Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.

Solution

Similar Questions

$Fe _{2} O _{3}+2 Al \rightarrow Al _{2} O _{3}+2 Fe$ The above reaction is an example of a

Why does the colour of copper sulphate solution change when an iron nail is dipped in it ?

In the refining of silver, the recovery of silver from silver nitrate solution involved displacement by copper metal. Write down the reaction involved.

What is a balanced chemical equation ? Why should chemical equations be balanced ?

Write the balanced equation for the following chemical reactions. $(i)$ Hydrogen $+$ Chlorine $\to $ Hydrogen chloride $(ii)$ Barium chloride $+$ Aluminium sulphate $\to $ Barium sulphate $+$ Aluminium chloride $(iii)$ Sodium $+$ Water $\to $ Sodium hydroxide $+$ Hydrogen

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$Fe _{2} O _{3}+2 Al \rightarrow Al _{2} O _{3}+2 Fe$

The above reaction is an example of a

Write the balanced equation for the following chemical reactions.

$(i)$ Hydrogen $+$ Chlorine $\to $ Hydrogen chloride

$(ii)$ Barium chloride $+$ Aluminium sulphate $\to $ Barium sulphate $+$ Aluminium chloride

$(iii)$ Sodium $+$ Water $\to $ Sodium hydroxide $+$ Hydrogen