Question

Tuliskan rumus molekul dari senyawa (C2H6O)n jika diketahui Mr senyawa tersebut adalah 92

Answer 1

N(C₂) + n(H₆) + n(O) = 92
= n(2 x 12) + n(6 x 1) + n(16) = 92
==> 24n + 6n + 16n = 92
===> 46n = 92
====> n = 2

Maka rumus molekul :
(C₂H₆O)₂ = C₄H₁₂O₂

Answer 2

(C2H6O)n = 92
=>Ar C=12; Ar H=1; Ar O=16.
(12 x 2 + 1 x 6 + 16)n = 92
(24 + 6 + 16)n = 92
(46)n = 92
n= 92/46
n= 2
.
.
(C2H6O)n=(C2H6O)2
Rumus Molekul = C4H12O2