Question

18. Find the charge of 1 gram of
coulombs (1 mole ion = 1gram ion)


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Answer 1

for 1 g-ion. 1 g-ion = (weight in grams of sum of atomic weight of atoms making the ion.)

Here N^3- has 14 amu so 1g-ion 14 gm.

So here we have to find for 14g that is 1mole of nitride ion. 1 ion of nitride has =1.6 ×10^-19 × 3 C

Therefore 6.022 × 10^23 ions has = 6.022 × 10^23 ×1.6 ×10^-19 × 3 C = 2.89 × 10^5 C.