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Verified answer
Materi : Kesetimbangan KimiaKelas : XI
Kata kunci : kesetimbangan
Diketahui:
t = 1000°C
Disosiasi HI = 0.23
Kc = 5.7
Ditanya:
Kp dan Kc tsb?
Pembahasan:
2 HI <===> H2 + I2
Jika HI awal = a mol dan derajat disosiasi = 0.23
HI yg terurai: 0.23a mol
H2 dan I2 yg terbentuk: 1/2 × 0.23a = 0.115a mol
Sisa HI: a - 0.23a = 0.77a mol
Kc = [H2].[I2]/[HI]^2
= (0.115a × 0.115a)/(0.77a)^2
= 0.0223
Kp = Kc.(R.T)^Δn
Δn = koefisien produk - koefisien reaktan
= 2 - 2
= 0
sehingga
Kp = Kc.(RT)^0
= Kc
= 0.0223
Jika Kc = 5.7 maka Kp = 5.7
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