Tolong jawab yang no.10

H2 + I2 => 2HI
molar HI = 4/5 = 0.8 Molar
molar H2 = 0.5/5 = 0.1 Molar
molar I2 = 0.5/5 = 0.1 Molar

Kc = [HI]²/([H2] [I2]
     = 0.8²/(0.1 x0.1)
     = 0.64/0.01
     = 64