 | August Dupré, Henry Wilson Hake - 1886 - 648 pages
...brown, and are without action on blue litmus, but, by neutralising the effect of any acid, they restore the blue colour to litmus which has been reddened by an acid. All basic oxides are oxides of metals. 2. Oxides which, in combination with water, yield compounds... | |
 | George S. Newth - 1896 - 308 pages
...experiment has the property of changing the colour of turmeric from yellow to brown, and also of restoring the blue colour to litmus which has been reddened by an acid. » acid to some water in a beaker. Dip a turmeric paper into this ; note that no stain is produced.... | |
 | George S. Newth - 1897 - 310 pages
...experiment has the property of changing the colour of turmeric from yellow to brown, and also of restoring the blue colour to litmus which has been reddened by an acid. acid to some water in a beaker. Dip a turmeric paper into this ; note that no stain is produced. Add... | |
 | Thomas Hawkins Percy Heriot - 1907 - 124 pages
...formed. This is a case of chemical change as distinct from blending or mere mixing. Alkalies restore the blue colour to litmus which has been reddened by an acid, and advantage is taken of this fact in testing for alkalies. Red litmus paper is made by steeping paper... | |
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... soluble in water; alcohol also dissolves it freely, which is the case with comparatively few of the compounds of this base; the solid hydrate of commerce, which is very impure, may thus be purified. The solution of this substance possesses, in the... 
