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TWO SIMPLE AND CONVENIENT GAS GENERATORS
1901
School Science and Mathematics
work until you get two results that correspond with each other. Arrange the results as in the preceding experiment. Then repeat this work, using phenolphthalein in the place of methyl orange. The hydrochloric acid must be added very cautiously, keeping the solution well stirred so as to avoid effervescence. Arrange results as before. Are the amounts of acid that react with a given quantity of sodium carbonate -the same in the two cases ? If not, is there any simple ratio between them? This
doi:10.1111/j.1949-8594.1901.tb00028.x
fatcat:n4c5njxu4jgdbn5ulbf7bqytra