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vikaprovotorin
@vikaprovotorin
September 2021
1
25
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Решите пожалуйста цепочку:
Ca--CaO--Ca(OH)2--Ca(NO3)2
\
Ca(OH)2--CaCl2
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Answers & Comments
luiluibuterfly
Снаала верхняя ветка
1) 2 ca+o2 =2 cao
2) cao + h2o = ca(oh)2
3) ca(oh)2+ 2 hno3 = ca(no3)2 +2 h2o
вторая ветка
4) ca+ h2o = ca(oh)2 + h2(газ)
5) ca(oh)2 + 2hcl = cacl2 + 2h2o
2 votes
Thanks 1
luiluibuterfly
как лучший отметь, пож
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Answers & Comments
1) 2 ca+o2 =2 cao
2) cao + h2o = ca(oh)2
3) ca(oh)2+ 2 hno3 = ca(no3)2 +2 h2o
вторая ветка
4) ca+ h2o = ca(oh)2 + h2(газ)
5) ca(oh)2 + 2hcl = cacl2 + 2h2o