三大毒理師
2019-1-6 23:18:29
想問下一d定義嘅問題
Base 係一樣compound 可以neutralize acid to form salt and water
所以metal hydroxide 同 metal oxide 係base
但點解喺acid-base titration 入面Na2CO3 明明唔係base因為佢同acid react 係出CO2 and water
但又點解可以用到methyl orange 嚟同acid 做titration
:^(
:^(
化學艾維斯
2019-1-6 23:23:25
titration唔一定要係做acid base neutralisation
至於用可以用methyl orange 只要你個reaction做到尾個下 mixture內有significant pH change就得 (when all Na2CO3 consumed, an additional drop of excess HCl will cause pH fall)
https://www.edb.gov.hk/attachment/en/curriculum-development/kla/science-edu/ref-and-resources/Supplementary_note_for_Chem_30Oct2015_e.pdf
你telegram我啦
https://t.me/elvislamchem