" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Mr metanol = 32
Persentase metanol = 92%
massa metanol = massa campuran x persentase/100%
= 100 x 92%/100%
= 100 x 92/100
= 92 gram
mol metanol = massa/Mr
= 92/32
= 2,875 gram
Persamaan reaksi pembakaran metanol :
2CH₃OH + 3O₂ → 2CO₂ + 4H₂O
mol CH₃OH = 2,875 mol
mol H₂O = 4/2 x 2,875
= 5,75 mol
massa H₂O = mol x Mr
= 5,75 x 18
= 103,5 gram
Jadi, massa H₂O yang dihasilkan adalah 103,5 gram (Jawaban yang paling mendekati C)
Kecuali kalau persentasenya 96%, maka H₂O yang dihasilkan tepat 108 gram