Question

A hydrated salt has the following percentage composition : Na = 16.10%; C = 4.20%: O = 16.77%
and water of crystallisation = 62.93%. Calculate the empirical formula of the hydrated salt. (Na 23.
C= 12:0 = 16: H = 1]
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Answer 1

Explanation:

mole value of Na= 16.10/23=0.7

" " of C= 4.20/12=0.35

mole value of O= 16.77/16= 1.08

simple mole ratio of Na= 0.7/0.35=2

simple molr ratio of C=0.35/0.35=1

simple mole ratio of O= 1.08/0.35= 3

so, emperical dormula is NA² CO³

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Answer 2

Answer:

it is Na2CO3.10H2O

Explanation:

it is hydrated