Some Basic Concepts Of Chemistry Question 194

Question: The number of gram atoms of oxygen present in 0.3 gram mole of $ {{(COOH)}_2}.2H _2O $ is

Options:

A) 0.6

B) 1.8

C) 1.2

D) 3.6

Show Answer

Answer:

Correct Answer: B

Solution:

$ \because $ 1mole $ {{(COOH)}_2}\ .\ 2H _2O $ has 96gm oxygen
$ \therefore $ 0.3 mole $ {{(COOH)}_2}\ .\ 2H _2O $ has $ 96\times 0.3=28.8gm $

$ \therefore $ No. of gram atoms of oxygen $ =\frac{28.8}{16}=1.8 $ .



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