硫酸工业中通常将尾气转化为硫酸铵,既能防止对大气的污染,又能充分利用原料.请回答下列问题:(1)硫

2025年04月06日 20:55
有1个网友回答
网友(1):

(1)①SO 2 的体积分数由0.4%降为0.2%因为二氧化硫体积不变,所以总体积必须变为原来的2倍,即空气与尾气的体积比为1:1;故答案为:1:1;
②设通入空气体积与硫酸工业废气体积都为100L则含氧气的体积为:100L×0.5%+100L×20.5%=21L,则混合后氧气体积分数为:
21L
200L
×100%
=10.5%  故答案为:10.5%;
(2)①由通入空气后的硫酸工业尾气以5×10 3 L/h的速率通过V 2 O 5 催化剂,可知通过二氧化硫的体积是5×10 3 L/h×0.2%=10L/h;由2SO 2 +O 2
催化剂
.
2SO 3 ; SO 3 +H 2 O+2NH 3 =(NH 4 2 SO 4 可推出二氧化硫与氨气的分子个数比为1:2,所以体积比也是1:2,所以氨气的速率为20L/h;故答案为:20;
②由方程式可知二氧化硫与硫酸铵的分子个数比为1:1,所以
SO 2 ----------------------------(NH 4 2 SO 4
22.4×10 -3 m3                     132×10 -6
30×5×10 5 m3×0.4%(正常排气未稀释)    x
x≈353.57吨
即该厂每月能生产353.57吨硫酸铵.

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