Vous avez cherché: fenolftalin (Maltais - Anglais)

soluzzjoni ta' fenolftalin:
phenolphthalein solution:

ara jekk hux sewwa billi zzid ftit qtar ta’ fenolftalin.
check by adding a few drops of phenolphthalein.

iddoża s-soluzzjoni b'aċidu sulforiku mal-fenolftalin sakemm jiġi bla kulur.
titrate the solution with sulphuric acid against phenolphthalein until it becomes colourless.

dewweb gramma ta' fenolftalin ġewwa 50 ml ethanol u żid 50 ml ilma bil-kostitwenti joniċi mneħħija filwaqt illi tibqa' tħawwad kontinwament.
dissolve 1 g phenolphthalein in 50 ml ethanol and add 50 ml deionized water while stirring continuously.

ivverifika l-konċentrazzjoni ta’ din is-soluzzjoni ta’ aċidu ċitriku billi tiddoża 10 ml tagħha b’soluzzjoni standard ta’ idrossidu tas-sodju 0.1 n, billi tuża fenolftalin bħala indikatur.
verify the concentration of this citric acid solution by titrating 10 ml of the latter with a sodium hydroxide standard solution 0 71 n, using phenolphtalein as an indicator.