Which of the following is the acid anhydride of orthophosphoric acid?
A) P4O10
B) PO4
C) P4 (white phosphorus)
D) P4O6
E) P (red phosphorus)
Correct Answer:
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Q82: Which of the following compounds is a
Q83: Which nitrogen-containing compound is produced commercially via
Q84: Polyphosphoric and metaphosphoric acids are made by
Q85: Nitric acid is obtained commercially from
A)NH3.
B)NH4NO3.
C)Mg3N2.
D)NaNO2.
E)CO(NH2)2.
Q86: Which of the following is not an
Q88: Which of the following statements about ammonia
Q89: A primary industrial purpose of calcium phosphate
Q90: The commercial preparation of nitric acid involves
Q91: Which formula-name combination is incorrect?
A)H3PO4,orthophosphoric acid
B)H5P3O10,pentaphosphoric acid
C)H3P3O9,trimetaphosphoric
Q92: Which of the following elements is least
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