For the following, calculate the hydroxide, carbonate, and bicarbonate alkalinity by the procedures $(1)$ using alkalinity measurements alone and $(2)$ using alkalinity plus $pH$ measurements. The sample size is $100mL,0\mathrm{.}020N{H}_{2}S{O}_4$ is used as the titrant, and water temperature is $25C.$

$\backslash$table$[[,,$Total $mL$ titrant to reach end point,$],[$Sample$,$Sample $pH,$Phenol.,BG $($bromcresol green$)],[$A$,10\mathrm{.}0,14\mathrm{.}4,38\mathrm{.}6],[$B$,11\mathrm{.}2,8\mathrm{.}2,8\mathrm{.}4],[$C$,7\mathrm{.}0,0,12\mathrm{.}7]]$