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fifa0900
@fifa0900
October 2021
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Осуществите цепочку превращений Na2CO3-NaCl - Na - NaCl - NaNO3 - Na2CrO4
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toystroy
1)Na2CO3+2HCl=H2O+CO2+2NaCl
2)2NaCl=2Na+Cl2
3)2Na+2HCl=H2+2NaCl
4)NaCl+AgNO3=AgCl+NaNO3
5) Cr2O3 + 3NaNO3 + 4NaOH =2Na2CrO4 +3NaNO2 +2H2O
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Answers & Comments
2)2NaCl=2Na+Cl2
3)2Na+2HCl=H2+2NaCl
4)NaCl+AgNO3=AgCl+NaNO3
5) Cr2O3 + 3NaNO3 + 4NaOH =2Na2CrO4 +3NaNO2 +2H2O