Potassium manganate is a dark green crystalline substance whose composition is 40.2%k,26.8%mn and the rest is p.what is its empirical formula
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Answer:k2+mno2
Explanation:K=40.2%Mn=26.8%O=33
Consider a 100 g sample
Moles of K=
39×100
100×40.2
=1.03
Moles of Mn=
55×100
100×26.8
=0.5
Moles of O=
16×100
100×33
=2.06
Formula ⇒K
1
Mn
0.5
O
2
⇒K
2
MnO
4
(Empirical Formula)
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