Предмет: Химия, автор: nasya2106

решите цепочки а)Ca-->CaO-->Ca(OH)2--->Ca(NO3)2--->CaSO4 б)Al2O3-->AL2(SO4)3--->AL(OH)3-->AL2O3 в)Cu---CuCl2--->Cu(OH)2--->CuO-->cU--->CuSO4--->Cu(OH2)

Ответы

Автор ответа: Warelyn
0

 а)Ca-->CaO-->Ca(OH)2--->Ca(NO3)2--->CaSO4

1) 2Ca + O2---> 2CaO

2) CaO + H2O---> Ca(OH)2

3) Ca(OH)2 + 2HNO----> Ca(NO)3 +2H2O

4) Ca(NO)3 + H2SO4---> CaSO4 + 2HNO3


б)Al2O3-->AL2(SO4)3--->AL(OH)3-->AL2O3

1) Al2O3+ 3 H2SO4---> Al2(SO4)3 + 3H2O

2) Al2(SO4)3 + 6NaOH---> 2Al(OH)3 + 3Na2SO4

3)2Al(OH)3 ---> Al2O3 + 3H2O


в)Cu---CuCl2--->Cu(OH)2--->CuO-->cU--->CuSO4--->Cu(OH2)

1) Cu + 2HCl---> CuCl2 + H2

2) CuCl2 + 2NaOH---> Cu(OH)2 + 2NaCl

3) Cu(OH)2---> CuO + H2O

4)Cu + 2H2SO4--->CuSO4 + SO2 + 2H2O

5) CuSO4 + 2NaOH---> Cu(OH)2+ Na2SO4

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