Medium
Which two observations will be made when quicklime is added to water? Mention two uses of the product obtained.
(N/A) Observations:
$(a)$ The reaction occurs vigorously.
$(b)$ $A$ large amount of heat is released (exothermic reaction).
Uses of the product $Ca(OH)_2$ (Calcium hydroxide):
$(a)$ It is used for whitewashing walls. It reacts slowly with $CO_2$ in the air to form a thin layer of calcium carbonate $(CaCO_3)$ on the walls,providing a shiny finish.
$(b)$ It is used as a laboratory reagent for testing the presence of $CO_2$ gas,as it turns milky upon reaction with it.
$(a)$ The reaction occurs vigorously.
$(b)$ $A$ large amount of heat is released (exothermic reaction).
Uses of the product $Ca(OH)_2$ (Calcium hydroxide):
$(a)$ It is used for whitewashing walls. It reacts slowly with $CO_2$ in the air to form a thin layer of calcium carbonate $(CaCO_3)$ on the walls,providing a shiny finish.
$(b)$ It is used as a laboratory reagent for testing the presence of $CO_2$ gas,as it turns milky upon reaction with it.
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Similar Questions
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
$(i)$ 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
Medium
View SolutionWhy do we store silver chloride in dark-coloured bottles?
Medium
View SolutionWrite a balanced chemical equation for each of the following reactions and also classify them.
$(a)$ Iron $(III)$ oxide on heating with carbon monoxide gas reacts to form solid iron and liberates carbon dioxide gas.
$(b)$ Hydrogen sulphide gas reacts with oxygen gas to form solid sulphur and liquid water.
$(a)$ Iron $(III)$ oxide on heating with carbon monoxide gas reacts to form solid iron and liberates carbon dioxide gas.
$(b)$ Hydrogen sulphide gas reacts with oxygen gas to form solid sulphur and liquid water.
Medium
View SolutionBalance the following chemical equations and identify the type of chemical reaction.
$(a)$ $Mg(s) + Cl_2(g) \to MgCl_2(s)$
$(b)$ $HgO(s) \xrightarrow{\text{Heat}} Hg(l) + O_2(g)$
$(c)$ $Na(s) + S(s) \xrightarrow{\text{Fuse}} Na_2S(s)$
$(a)$ $Mg(s) + Cl_2(g) \to MgCl_2(s)$
$(b)$ $HgO(s) \xrightarrow{\text{Heat}} Hg(l) + O_2(g)$
$(c)$ $Na(s) + S(s) \xrightarrow{\text{Fuse}} Na_2S(s)$
Medium
View SolutionBalance the following chemical equations and identify the type of chemical reaction.
$(a)$ $TiCl_4(l) + Mg(s) \to Ti(s) + MgCl_2(s)$
$(b)$ $CaO(s) + SiO_2(s) \to CaSiO_3(s)$
$(c)$ $H_2O_2(l) \xrightarrow{UV} H_2O(l) + O_2(g)$
$(a)$ $TiCl_4(l) + Mg(s) \to Ti(s) + MgCl_2(s)$
$(b)$ $CaO(s) + SiO_2(s) \to CaSiO_3(s)$
$(c)$ $H_2O_2(l) \xrightarrow{UV} H_2O(l) + O_2(g)$
Medium
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