deep green is the colour of phenolphthalein in hcl acid.
deep green is the colour of phenolphthalein in hcl acid.
what is the colour of phenolphthalein in hcl acid?
deep green
phenolphthalein is slightly soluble in water and usually is dissolved in alcohols for use in experiments. it is a weak acid, which can lose h ions in solution. the phenolphthalein molecule is colorless, and the phenolphthalein ion is red. when a base is added to the phenolphthalein, the equilibrium shifts, leading to more ionization as h ions are removed. this is predicted by le chatelier's principle.









































section::::uses.









































section::::uses.:ph indicator.









































phenolphthalein's common use is as an indicator in acid-base titrations. it also serves as a component of universal indicator, together with methyl red, bromothymol blue, and thymol blue.
phenolphthalein
gastrinoma









































a gastrinoma is a tumor in the pancreas or duodenum that secretes excess of gastrin leading to ulceration in the duodenum, stomach and the small intestine. there is hypersecretion of hcl acid into the duodenum, which causes the ulcers. excessive hcl acid production also causes hyperperistalsis, and inhibits the activity of lipase, causing severe diarrhea.









































it is frequently the source of the gastrin in zollinger-ellison syndrome.
gastrinoma