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zastava35
@zastava35
July 2022
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СРОЧНО! написать уравнения реакций,при помощи которых можно осуществить превращения:
1.Ca→CaO→Ca(OH)2→CaCl2
2)Cu→CuO→CuCl2→Cu
3)Cu←CuO→CuSO4
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Answers & Comments
Darkness21
1. Ca→CaO→Ca(OH)2→CaCl2
1) 2Ca + O2 --> 2CaO
2) CaO + H2O --> Ca(OH)2
3) Ca(OH)2 + 2HCl --> CaCl2 + 2H2O
2. Cu→CuO→CuCl2→Cu
1) 2Cu + O2 --> 2CuO
2) CuO + 2HCl --> CuCl2 + H2O
3) CuCl2 + Zn --> ZnCl2 + Cu
3. Cu←CuO→CuSO4
1) CuO + H2 --> Cu + H2O
2) CuO + H2SO4 --> CuSO4 + H2O
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Answers & Comments
1) 2Ca + O2 --> 2CaO
2) CaO + H2O --> Ca(OH)2
3) Ca(OH)2 + 2HCl --> CaCl2 + 2H2O
2. Cu→CuO→CuCl2→Cu
1) 2Cu + O2 --> 2CuO
2) CuO + 2HCl --> CuCl2 + H2O
3) CuCl2 + Zn --> ZnCl2 + Cu
3. Cu←CuO→CuSO4
1) CuO + H2 --> Cu + H2O
2) CuO + H2SO4 --> CuSO4 + H2O