Write the balanced chemical equations for the following reactions.
$(a)$ Calcium hydroxide $+$ Carbon dioxide $\rightarrow$ Calcium carbonate $+$ Water
$(b)$ Zinc $+$ Silver nitrate $\rightarrow$ zinc nitrate $+$ Silver
$(c)$ Aluminium $+$ Copper chloride $\rightarrow$ Aluminium chloride $+$ Copper
$(d)$ Barium chloride$+$ Potassium sulphate $\rightarrow$ Barium sulphate $+$ Potassium chloride
$(a)$ $Ca ( OH )_{2}+ CO _{2} \longrightarrow CaCO _{3}+ H _{2} O$
$(b)$ $Zn +2 AgNO _{3} \longrightarrow Zn \left( NO _{3}\right)_{2}+2 Ag$
$(c)$ $2 Al +3 CuCl _{2} \longrightarrow 2 AlCl _{3}+3 Cu$
$(d)$ $BaCl _{2}+ K _{2} SO _{4} \longrightarrow BaSO _{4}+2 KCl$
Why is respiration considered an exothermic reaction ? Explain.
In the refining of silver, the recovery of silver from silver nitrate solution involved displacement by copper metal. Write down the reaction involved.
$Fe _{2} O _{3}+2 Al \rightarrow Al _{2} O _{3}+2 Fe$
The above reaction is an example of a
What is the difference between displacement and double displacement reactions ? Write equations for these reactions.
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