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CHM191

Question: an element that undergoes a decrease jn oxidation number is called?
Answer:  oxidizing agent

Question: Of all the oxidizable species available for use, iodine titration are usually used with the
Answer:  Thiopsulphate

Question: In redox titration involving potassium permanganate, if the contents of the conical flask turn brown, it means 	was added
Answer:  Insufficient acid catalyst

Question: Potassium permanganate can be
used to estimate the	of a
substance
Answer:  percentage purity

Question: Detection of functional groups in a single compound, is an example of ?
Answer:  qualitative analysis

Question: The point at which stoichiometrically equivalent quantities of substances have been brought together is known as
Answer:  the equivalence point of titration

Question: Which apparatus is used in measuring a base in laboratory?
Answer:  pipette



Question: In the	, standard solutions
of iodine are used to estimate directly the concentrations of some oxidizable species.
Answer:  Direct method

Question: Potassium permanganate is a self-indicating reagent because of its
different characteristic‭	‬in either the
acidic or basic medium
Answer:  Colour change

Question: The colour changes accompanying the varying change in oxidation states of iodine and its ion can be used to indicate the
Answer:  end point

Question: Volumetrie analysis involving iodine are usually referred to as
Answer:  iodometry



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