Cetyltrimethyl ammonium bromide (TAB) is popular is
antioxidant
antibiotic
surfactant
tranquillizer
Drugs are the chemicals with
low molecular masses
high molecular masses
low atomic mass
high atomic mass
Which is incorrectly matched?
Golden spangles . PbCrO4
Cu2S + FeS: Matte
ZnO : Pompholyx
10 vol H2O2 : 3.035%
A drug that is antipyretic as well as analgesic is
penicillin
chloroquin
para-acetamidophenol
chloropromazine hydrochloride
The pH value of gastric juice in human stomach is about 1.8 and in the small intestine it is about 7.8. The pKa value of aspirin is 3.5. Aspirin will be
completely ionised in the small intestine and in the stomach
unionised in the small intestine and in the stomach
ionised in the small intestine and almost unionised in the stomach
ionised in the stomach and almost unionised in the small intestine
D.
ionised in the stomach and almost unionised in the small intestine
Aspirin is a moderate acid (pKa = 3.5), hence is almost unionised in stomach due to strong acidic medium of it (because of HCl). It is due to common ion effect. While in small intestine, the medium is alkaline, hence aspirin will be sufficiently ionised in small intestine.