how many coulombs?

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Q- how many coulombs of charge is present on 1-g N^-3 ion ?

#Chemistry #Physical Chemistry

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2 Answers

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swordfish ·2010-11-22 07:49:43

N^3- has 3 extra electrons.
So extra charge should appear due to it.

1 atom has 3 electrons
1 mole will have 3 x 6 x 10²³ electrons
1 g will have 3 x 6 x 10²³/14 electrons ( 14 is gram atomic mass of N)
Since charge on 1 electron is 1.6 x 10^-19C, charge on
3 x 6 x 10²³/14 electrons will be 3 x 6 x 10²³/14 x 1.6 x 10^-19 C

Answer on solving is 20571C (app.)

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pritishmasti ............... ·2010-11-22 07:58:54

thank you swordfish
In p. bahadur division by 14 was not done and answer was given wrong

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