Home › Miscellaneous Chemicals › Tests for the Solutions of Zinc

Tests for the Solutions of Zinc

The solutions of zinc are precipitated white by the pure alkalies and carbonate of ammonia, but are completely redissolved by excess of ply heat until bubbles cease to be evclved; the precipitant. The carbonates of potassa decant the clear and evaporate to dryness. and soda give a permanent white precipitate Fuse the product in a lightly covered crucible, of carbonate of zinc. Hydrosulphuret of by a red heat; pour it out on a flat, smooth ammonia also gives a white precipitate, and stone, and, when cold, break it into small so does sulphuretted hydrogen when the solupieces, and preserve it in a well-stoppered tion is quite neutral. Prussiate of potash bottle.