Question

. The dissolved oxygen in test solution shows interferring nuisance in polarographic
analysis due to reaction of
(a) oxidation of mercury (b) conversion of O2 → H2O2 → H2O
(c) Oxidation of cations (d) H2O + O2 + H2O2 + 103-​

Answer 1

Answer:

b answer is correct as per our textbooks

Answer 2

Answer: Correct answer is (b)

Explanation:

Dissolved oxygen measurement is one of the most widely used and important of all chemical methods available for studying the aquatic environment.

Dissolved oxygen provides valuable information about biological and biochemical reactions occurring in water; it is a measure of one of the important environmental factors affecting aquatic life as well as the capacity of water to receive organic matter without causing nuisance.

In fresh water, oxygen gas dissolves freely.

Oxygen can be added to water from the atmosphere or as a byproduct of photosynthesis in aquatic plants, and it is used in a variety of respiratory biochemical and inorganic chemical reactions.

The concentration of dissolved oxygen in water is also affected by temperature, pressure, and the concentrations of other elements.

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