Medium
Complete and balance the following chemical equations:
$(i)$ $CaCO_{3} + HCl \longrightarrow$
$(ii)$ $Al + HCl \longrightarrow$
$(iii)$ $MnO_{2} + HCl \longrightarrow$
$(i)$ $CaCO_{3} + HCl \longrightarrow$
$(ii)$ $Al + HCl \longrightarrow$
$(iii)$ $MnO_{2} + HCl \longrightarrow$
(N/A) $(i)$ The reaction between calcium carbonate and hydrochloric acid produces calcium chloride,water,and carbon dioxide: $CaCO_{3} + 2HCl \longrightarrow CaCl_{2} + H_{2}O + CO_{2}$
$(ii)$ The reaction between aluminium and hydrochloric acid produces aluminium chloride and hydrogen gas: $2Al + 6HCl \longrightarrow 2AlCl_{3} + 3H_{2}$
$(iii)$ The reaction between manganese dioxide and hydrochloric acid produces manganese$(II)$ chloride,chlorine gas,and water: $MnO_{2} + 4HCl \longrightarrow MnCl_{2} + Cl_{2} + 2H_{2}O$
$(ii)$ The reaction between aluminium and hydrochloric acid produces aluminium chloride and hydrogen gas: $2Al + 6HCl \longrightarrow 2AlCl_{3} + 3H_{2}$
$(iii)$ The reaction between manganese dioxide and hydrochloric acid produces manganese$(II)$ chloride,chlorine gas,and water: $MnO_{2} + 4HCl \longrightarrow MnCl_{2} + Cl_{2} + 2H_{2}O$
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Which of the following is(are) an endothermic process(es)?
$(i)$ Dilution of sulphuric acid
$(ii)$ Sublimation of dry ice
$(iii)$ Condensation of water vapours
$(iv)$ Evaporation of water
$(i)$ Dilution of sulphuric acid
$(ii)$ Sublimation of dry ice
$(iii)$ Condensation of water vapours
$(iv)$ Evaporation of water
Medium
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Difficult
View SolutionBalance the following chemical equations and identify the type of chemical reaction.
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$(b)$ $HgO(s) \xrightarrow{\text{Heat}} Hg(l) + O_2(g)$
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$(a)$ $Mg(s) + Cl_2(g) \to MgCl_2(s)$
$(b)$ $HgO(s) \xrightarrow{\text{Heat}} Hg(l) + O_2(g)$
$(c)$ $Na(s) + S(s) \xrightarrow{\text{Fuse}} Na_2S(s)$
Medium
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