Write word equations and then balanced equations for the reaction taking place when -
$(a)$ dilute sulphuric acid reacts with aluminium powder.
$(b)$ dilute hydrochloric acid reacts with iron filings.
$(a)$ Sulphuric acid $+$ Aluminium $\rightarrow$ Aluminium sulphate $+$ Hydrogen
$3{{H}_{2}}S{{O}_{4(aq)}}\,+A{{l}_{(s)}}\to $ $A{{l}_{2}}{{(S{{O}_{4}})}_{3(aq)}}\,+\,3{{H}_{2(g)}}$
$(b)$ Hydrochloric acid $+$ Iron $\rightarrow$ Ferric chloride $+$ Hydrogen
$6 HCl _{(a q)}+2 Fe _{(s)} \longrightarrow 2 FeCl_{3(aq)}+3 H _{2(g)}$
You have been provided with three test tubes. One of them contains distilled water and the other two contaln an acidic solution and a basic solution, respectlvely. If you are glven only red litmus paper. how will you identify the contents of each test tube ?
What will happen if a solution of sodium hydrocarbonate is heated ? Give the equation of the reaction involved.
Why does dry $HCl$ gas not change the colour of the dry litmus paper ?
Why does an aqueous solution of an acid conduct electricity?
Why should curd and sour substances not be kept in brass and copper vessels ?