一道化学题 帮我看下怎么做

2024-12-03 22:48:52
推荐回答(2个)
回答1:

1\ 2NaOH + H2SO4 = H2O + Na2SO4
2\ 生成气纯袭体为二氧化碳.白色钠盐为碳酸钠笑丛.
则生生气体为= (2*98*20%/98 - 80*10%/碰裤樱40)/2 * 44 = 4.4
3\ 4.4/44 * 106 = 10.6
质量分数 = 10.6/20 = 53%
4 (98/98 * 142 -4.4)/(98+20+80+6.47-4.4) = 68.56%

回答2:

1. Na2CO3+H2SO4=Na2SO4+H2O+CO2↑
2.
3. 53