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113. Solving a chemistry problem
Uploaded:
15.08.2022
Content: 1.rar 28,75 kB
Content: 1.rar 28,75 kB
Product description
1. In a volumetric flask with a capacity of 200 ml, a mixture of hydrochloric and phosphoric acids was dissolved. The sample volume is 5 ml. For titration of 20 ml of the resulting solution with methyl orange, 18.2 ml of 0.1012 M NaOH was used. When titrating the same volume of a new portion of the analyzed solution with phenolphthalein, 34.7 ml of NaOH solution were consumed. How many g of HCl and H3PO4 are contained in 100 ml of the mixture? answer 1.26 32.73
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