Qhov kub ntawm cov ntsuas ntsuas ntsuas ntsuas ntsuas
mle, {{{{{{0}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Qhov siab tshaj plaws yuam kev ntawm qhov kub nyhuv yog 30 × 0. {{}}. 09 pH. Yog tias muaj 3 hom kab (tsis pub dhau ntawm photy ntawm {14 14}}), qhov yuam kev siab tshaj plaws yog 0.27 pH, qhia tias kub muaj txiaj ntsig rau PH. Tau kawg, peb kuj tuaj yeem kos cov lus xaus uas txhawm rau txo qhov ua yuam kev ntawm cov ntsuas kub, peb yuav tsum them sai sai rau peb lub ntsiab lus hauv qab no:
(a) Sim xaiv cov kev daws teeb meem ntas uas nyob ze rau kev ntsuas ntsuas ntawm tus lej pH kom ntsuas qhov tseeb lub ntsuas pha;
(b) sim ua kom qhov kub ntawm kev ntsuas hluav taws xob sib npaug lossis ze rau qhov ntsuas kub ntawm kev ntsuas ntsuas;
(c) Cov tshuaj point nrog kev them nyiaj kub yuav tsum raug xaiv.
Phhals nrog qhov raug yog dua {{{0}}}}}. 2 qib tsis muaj kev txom nyem. Ib co pheters photers ntawm 0. 2 qib tseem thov kom raug ntawm {}. 1 qib, tab sis qhov no yeej ua tsis tau. Qee tus neeg tau tsis meej pem cov tswv yim ntawm kev daws teeb meem {{0}}. 1 pH thiab qhov tseeb}. 1 pH. Txawm hais tias nyob rau hauv cov nqe lus ntawm cov phev sib cais, cov ntawv sib cais ntawm 60 degree yog 0.03 60=0. 18 pH. Yog li ntawd, tsis tas yuav them nqi, qhov siab tshaj plaws ntawm lub ntsuas ntev yog 0.2 ph.
