True or False. 1. The absorbance of a sample is equal to the negative logarithm of the transmittance. 2. Winkler method of dissolve oxygen determination is an example of iodometry. 3. A diazo compound is produced when nitrite is reacted with sulfanilamide in acidic solution.
True or False.
1. The absorbance of a sample is equal to the negative logarithm of the transmittance.
2. Winkler method of dissolve oxygen determination is an example of iodometry.
3. A diazo compound is produced when nitrite is reacted with sulfanilamide in acidic solution.
4. Atomic Absorption Spectroscopy can be used to analyze the
5. A diode array spectrometer use an absorption or interference filters for wavelength selection and a photoelectric device for measuring radiant power.
6. The oxidation state for the manganese in the brown solid which precipitate in Winkler method is +3
7. In Winkler method, the iodine produced is oxidized during sodium thiosulfate titration to iodide ion.
8. When the pH of the solution is adjusted to pH greater than 12, the EDTA reacts with magnesium ions only, because calcium precipitates as calcium hydroxide.
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