Qualitative analysis / by William Briggs and R.W. Stewart.

  • William Briggs
Date:
1913
Catalogue details

Licence: Public Domain Mark

Credit: Qualitative analysis / by William Briggs and R.W. Stewart. Source: Wellcome Collection.

    169/180 (page 153)
    9. Required to find the notable impurity in Strontium Nitrate (Sr(N03)2, a colourless crystal¬ line substance soluble in Water. Examination for Base. Experiment. Observation. Inference. » Added HC1 to aqueous solution. No pp. Gp. I. absent. ,, H2S ,, ,, y y Gp. II. absent. Boiled original solution with a few drops of HN03. Added AmCl + AmOH. >5 Gp. III. absent. Added Am2S to part of alka- Gp. IV. absent. line liquid. Added Am9C03; to remainder. White pp. Ba, Sr, Ca. Filtered. Added Na2HP04 No pp. Mg absent. to filtrate. Dissolved Gp. V. pp. in acetic acid. Added K2Cr04 to part of solution. Ba absent. Added excess of H2S04 to . remainder and boiled. Fil¬ tered off SrS04. Added ammonia to filtrate till alkaline and then am¬ monium oxalate. White pp. Ca. Tried flame test with some Yellowish-red Ca. of calcium oxalate pp. coloration. ’ . v * • ( + HC1). ).' i • Examination for Acid. 1' . i t ■ Added BaCl2 to aqueous solution. No pp. H2S04, etc., absent. Added HN03 + AgN03 to aqueous solution. HC1, etc., absent. The impurity is Calcium Nitrate—Ca(N03)2.