Penjelasan:
4. a. Perbandingan koefisien ~ perbandingan volume
C2H5OH : O2 : CO2 : H2O = 2 : 5 : 4 : 2
V O2 = ( 5 / 2 ) x 5 L = 12,5 L
V CO2 = ( 4 / 2 ) x 5 L = 10 L
V H2O = ( 2 / 2 ) x 5 L = 5 L
b. Jmlh molekul CO2 = n x 6,02×10^23
6,02×10^23 = n x 6,02×10^23
n = 1 mol
Jmlh molekul NH3 = n x 6,02×10^23
3,01×10^24 = n x 6,02×10^23
n = 5 mol
Hukum perbandingan molekul:
V CO2 / V NH3 = n CO2 / n NH3
5 / V NH3 = 1 / 5
V NH3 = 25 L
6. Perbandingan koefisien ~ perbandingan volume
10 NxOy => 10 NO + 5 O2
Ruas kiri ~ ruas kanan
10 Nx = 10 N => x = 1
10 Oy = 20 O => y = 2
Rumus : NO2
