fatihahalhusna
Diketahui C = 80% H = 20% (Pada suhu kamar(RTP)) Ditanya RE dan RM Jawab Menentukan rumus empiris C : H = 80/12 : 20/1 = 1 : 3 RE = CH3 Menentukan rumus molekul 1,25 gr (CH3)n = 1 L Mr (CH3)n = 24/1 x 1,25 = 30 15n = 30 n = 2 Jadi rumus molekul = C2H6
C = 80%
H = 20%
Ditanya
RE dan RM
Jawab
Menentukan rumus empiris
C : H = 80/12 : 20/1
= 1 : 3
RE = CH3
Menentukan rumus molekul
1,25 gr (CH3)n = 1 L
Mr (CH3)n = 24/1 x 1,25 = 30
15n = 30
n = 2
Jadi rumus molekul = C2H6