The water formed in the combustion analysis is usually absorbed by:
Correct answer: B. Mg (ClO4)2
- A. Mg (NO3)2
- B. Mg (ClO4)2
- C. Mg (OH)2
- D. Mg (ClO2)2
Explanation
The correct answer is Mg (ClO4)2, or magnesium perchlorate, which is widely used in combustion analysis as a drying agent due to its hygroscopic properties. It effectively absorbs moisture from its surroundings, making it ideal for removing water formed during combustion processes. Other compounds listed, such as magnesium nitrate, magnesium hydroxide, and magnesium chlorite, do not possess the same level of hygroscopic ability and are not typically used for this purpose.
This question appeared on the ETEA MDCAT 2016 paper, which you can sit online with every answer explained.
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