The Elements of Qualitative Chemical Analysis, vol. 1, parts 1 and 2Note 496 — Chapter XIII · THE ARSENIC GROUP. SULPHO-ACIDS AND SULPHO-SALTSReading editionSuch a solution does not react alkaline to phenolphthaleïn.◇Copy noteReturn to CHAPTER XIII THE ARSENIC GROUP. SULPHO-ACIDS AND SULPHO-SALTS