Nika_totoro

2h2s + 3o2 = 2so2 + 2h2o so2(изб) + naoh = nahso3 n(h2s) = 4.48/22.4 = 0.2 n (naoh) = 57.4 * 0.2 * 1.22 / 40 = 0.35 n (so2) = n (h2s) n (naoh)ost = 0.35 - 0.2 = 0.15 n (nahso3)= n (so2) = 0.2 nahso3 + naoh = na2so3 + h20 n(nahso3) = 0.2 - 0.15 = 0.05 n (na2so3) = n (naoh) = 0.15 m (na2so3) = n*M = 0.15 * 126= 18.9 m (nahso3) = n*M = 0.05 * 104 = 5.2 m p-pa = m (so2) + m (naoh) = 82.828 w(nahso3) = 5.2 / 82.828 = 6% w(na2so3) = 18.9 / 82.828 = 22% ca(oh)2 + na2so3 = caso4 + 2naoh ca(oh)2 + nahso3 = caso4 + na2so4 + h2o n(caso4) = n (na2so4) = 0.15 m(caso4) = 0.15 * 136 = 20.4 n(caso4) = 1/2n(nahso3) = 0.025 m (caso4) = 3.4 answer: w(nahso3) = 6% w(na2so3) = 22% m(caso4) = 23.8g