You have been given sodium sulfate and sodium sulfite tubes. Determine with the help of one reagent
| September 23, 2021 | education
You have been given sodium sulfate and sodium sulfite tubes. Determine with the help of one reagent in which tube each of the indicated substances is located.
Sodium sulfite is a salt of a weak acid and a strong base, therefore, it will hydrolyze in an aqueous medium:
Na2SO3 + H2O = NaOH + NaHSO3
Due to the hydrolysis process, the sodium sulfite solution will be alkaline, so it can be distinguished by adding litmus (the indicator will turn blue).
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