生石灰純度的計(jì)算
煅燒純度為80%的石灰石50噸.
(1)制得生石灰含氧化鈣多少噸?
(2)此生石灰的純度是多少(雜質(zhì)不反應(yīng),全部進(jìn)入生石灰)?
分析:由題意計(jì)算出純度為80%的石灰石50噸利中碳酸鈣的質(zhì)量,進(jìn)而用化學(xué)方程式由碳酸鈣的質(zhì)量列式計(jì)算即可.
|
CaO+CO2↑
100?????????56
50t×80%???? x
100 |
56 |
=
50t×80% |
x |
??? x=22.4t.
(2)純度為80%的石灰石50噸中雜質(zhì)的質(zhì)量為50t×(1-20%)=10t.
此生石灰的純度是
22.4t |
22.4t+10t |
×100%=69.1%.
答:(1)制得生石灰含氧化鈣的質(zhì)量為22.4t.
(2)此生石灰的純度是69.1%.