What effect does the concentration of $H^+_{(aq)}$ ions have on the nature of the solution ?
Concentration of $H^+_{(aq)}$ can have a varied effect on the nature of the solution. With an increase in $H^+$ ion concentration, the solution becomes more acidic, while a decrease of $H^+$ ion causes an increase in the basicity of the solution.
Five solutions $A,\,B,\,C,\,D$ and $E$ when tested with universal indicator showed $pH$ as $4,\,1,\,11,\,7$ and $9$, respectively. Which solution is
$(a)$ neutral ?
$(b)$ strongly alkaline ?
$(c)$ strongly acidic ?
$(d)$ weakly acidic ?
$(e)$ weakly alkaline ?
Arrange the $pH$ in increasing order of hydrogen-ion concentration.
Under what soil condition do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate) ?
How is the concentration of hydroxide ions $(OH^-)$ affected when excess base is dissolved in a solution of sodium hydroxide ?
Why does dry $HCl$ gas not change the colour of the dry litmus paper ?
Write an equation to show the reaction between Plaster of Paris and water.