Write a balanced chemical equation with state symbols for the following reactions.
$(i)$ Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.
$(ii)$ Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.
$(i)$ $BaC{l_{2\left( {aq} \right)}} + N{a_2}S{O_{4\left( {aq} \right)}}$ $\to $ $BaS{O_{4(s)}} + 2NaC{l_{\left( {aq} \right)}}$
$(ii)$ $NaO{H_{(aq)}} + HC{l_{(aq)}}$ $ \to NaC{l_{(aq)}} + {H_2}{O_{(l)}}$
Give an example of a double displacement reaction other than the one given in image.
What is a balanced chemical equation ? Why should chemical equations be balanced ?
Balance the following chemical equations.
$(a)$ $HNO _{3}+ Ca ( OH )_{2} \longrightarrow Ca \left( NO _{3}\right)_{2}+ H _{2} O$
$(b)$ $NaOH + H _{2} SO _{4} \longrightarrow Na _{2} SO _{4}+ H _{2} O$
$(c)$ $NaCl + AgNO _{3} \longrightarrow AgCl + NaNO _{3}$
$(d)$ $BaCl _{2}+ H _{2} SO _{4} \longrightarrow BaSO _{4}+ HCl$
Why do we apply paint on iron articles ?
Which of the statements about the reaction below are incorrect ?
$2 PbO _{( s )}+ C _{( s )} \longrightarrow 2 Pb _{( s )}+ CO _{2( g )}$
$(a)$ Lead is getting reduced.
$(b)$ Carbon dioxide is getting oxidised.
$(c)$ Carbon is getting oxidised.
$(d)$ Lead oxide is getting reduced.