Chemistry
Chemistry, 15.10.2019 10:00, Hudman57

Which functional group of salicylic acid forms a complex with fe if colored reaction observed with the iron 3 chloride test?

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Chemistry, 26.06.2019 17:10, natasniebow
Salicylic acid, hoc6h4co2h, and its derivatives have been used as pain relievers for a long time. salicylic acid occurs in small amounts in the leaves, bark, and roots of some vegetation (most notably historically in the bark of the willow tree). extracts of these plants have been used as medications for centuries. the acid was first isolated in the laboratory in 1838. (a) both functional groups of salicylic acid ionize in water, with ka = 1.0 × 10-3 for the —co2h group and 4.2 × 10-13 for the —oh group. what is the ph of a saturated solution of the acid (solubility=1.8 g/l)? (b) aspirin was discovered as a result of efforts to produce a derivative of salicylic acid that would not be irritating to the stomach lining. aspirin is acetylsalicylic acid, ch3co2c6h4co2h. the —co2h functional group is still present, but its acidity is reduced, ka = 3.0 × 10-4. what is the ph of a solution of aspirin with the same concentration as a saturated solution of salicylic acid (see part a). (c) under some conditions, aspirin reacts with water and forms a solution of salicylic acid and acetic acid: ch3co2c6h4co2h(aq) + h2o(l) → hoc6h4co2h(aq) + ch3co2h(aq) which of the acids, salicylic acid or acetic acid, produces more hydronium ions in such a solution?
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Chemistry, 05.07.2019 11:00, kimhoss2
Asample of iron metal is placed in a graduated cylinder. it is noted that 10.4 ml of water is displaced by the iron. the iron is then reacted with excess hydrochloric acid to produce iron (ii) chloride and hydrogen gas. given the density for iron is 7.86 g/ml, how many grams of iron (ii) chloride are produced in the reaction?
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