Qhov twg ntawm KHP thiab NaOH yog thawj tus qauv thiab vim li cas?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Potassium hydrogen phthalate , feem ntau hu ua yooj yim KHP , yog ib qho acidic ntsev compound. KHP yog me ntsis acidic, thiab nws yog feem ntau siv raws li ib tug thawj tus qauv rau acid-base titrations vim nws yog khoom thiab huab cua-ruaj khov, ua kom yooj yim rau hnyav kom raug. Nws tsis yog hygroscopic.

Ib yam li ntawd, tib neeg nug, vim li cas NaOH tsis siv los ua tus qauv tseem ceeb?

a) nqus dej noo los ntawm huab cua. N os H NaOH NaOH yog tsis yog haum rau siv raws li ib tug thawj tus qauv vim tias lawv tau yooj yim nqus dej, H 2 O H_2O H2O, los ntawm huab cua. Lawv yooj yim nqus carbon dioxide los ntawm cov cua.

Tsis tas li ntawd, koj ua tus qauv NaOH nrog KHP li cas? Ntu I. Kev tsim qauv ntawm NaOH nrog KHP

1. Ntxuav lub buret los ntawm yaug nrog ob peb feem (kwv yees li 10 mL) ntawm cov kais dej.
2. Tau txog 150 mL ntawm NaOH tov nyob rau hauv ib tug huv, qhuav 400 mL beaker.
3. Yaug lub buret nrog peb feem (li 5 mL) ntawm cov tshuaj NaOH.

Ua raws li qhov no, dab tsi ua rau Khp xaiv zoo rau kev tsim qauv ntawm lub hauv paus?

Cov poov tshuaj hydrogen phthalate ( KHP ) yog a haum Cov txheej txheem tseem ceeb vim tias nws ruaj khov raws li cov khoom thiab hauv kev daws, nws yog soluble hauv dej, nws tsis yog hygroscopic, nws yooj yim qhuav thiab nws cov molecular loj (kwv yees li 200 g mol-1) ua rau yooj yim thiab raug txiav txim siab ntau ntawm cov khoom. rau ua

Koj pom qhov concentration ntawm NaOH siv Khp li cas?

Cov qauv

1. % Uncertainty of KHP Mass = (0.01/m_KHP) x 100.
2. % Uncertainty of (aq) KHP in Volumetric Flask = (0.1/100) x 100.
3. % Uncertainty of (aq) KHP in Pipette = (0.1/10) x 100.
4. % Uncertainty of NaOH Volume = (0.1/V_NaOH) x 100.