Aspirin hydrolyses los tsim 2-hydroxybenzoic acid thiab ethanoic acid (pom hauv qab). … Tus nqi ntawm 2-hydroxybenzoic acid nyob rau hauv ib qho kev daws los ntawm hydrolysing aspirin tuaj yeem txiav txim siab los ntawm ntxiv cov hlau (III) ions thiab ntsuas qhov kev siv ntawm cov tshuaj violet-xiav. Los ntawm qhov no, cov tshuaj aspirin tuaj yeem suav tau.
Koj pom qhov concentration ntawm aspirin li cas?
- Cov txiaj ntsig thiab suav: Kos tus qauv nkhaus thiab siv Beer txoj cai los txiav txim siab txog ASA hauv koj cov qauv tshuaj aspirin. Rau Standard Curve: x-axis ⇒ concentration ASA (M) …
- Table 1: Standard ASA nkhaus cov ntaub ntawv. Volume ASA (mL) …
- 0.186. 0.50 Nws. …
- y=1442.7x. R2=0,9968. …
- , l=1.00 cm rau qhov kev sim no.
Kev tshuaj ntsuam colorimetric ua haujlwm li cas?
Colorimetric tsom xam yog ib txoj hauv kev los txiav txim siab cov ntsiab lus ntawm cov tshuaj lom neeg lossis tshuaj lom neeg hauv cov tshuaj nrog kev pab ntawm cov xim reagent. Nws yog siv tau rau ob qho tib si organic tebchaw thiab inorganic compounds thiab tej zaum yuav siv nrog los yog tsis muaj ib tug enzymatic theem.
Dab tsi wavelength aspirin nqus ntawm?
acetylsalicylic acid (aspirin) siv: Sodium salicylate yuav ua rau cov kua qaub Fe3+ los ua salicylatoiron (III) complex, [FeSal]+. Cov complex no qhia txog qhov nqus siab tshaj plaws ntawm lub wavelength ntawm 525 nmthiab muaj xim liab.xim.
Vim li cas lub wavelength ntawm 530 nm tau siv thaum lub sij hawm soj ntsuam ntawm cov tshuaj aspirin?
Thaum kho nrog cov tshuaj yooj yim acetylsalicylic acid hydrolyzes sai sai rau salicylic acid thiab acetate ions. Cov salicylate ions yuav tsim cov xim sib xyaw nrog cov ferric ion hauv cov kua qaub. Lub wavelength ntawm qhov siab tshaj plaws haum rau qhov complex yog hais txog 530 nm.
