Atomic StructureHard
Question
The sodium salt of methyl orange contains 7% of sodium. What is the minimum molecular weight of the compound (atomic weight of Na = 23) :-
Options
A.825
B.359
C.442
D.329
Solution
∵ 7g sodium present in 100 g methyl orange
∴ 23g (one mole atom) sodium present in
× 23g = 329g methyl organge
⇒ molecular weight = 329 amu
∴ 23g (one mole atom) sodium present in
× 23g = 329g methyl organge⇒ molecular weight = 329 amu
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