А)
2Ba + O2 = 2BaO
BaO + H2O = Ba(OH)2
Ba(OH)2 + 2HNO3 = Ba(NO3)2 + 2H2O
Б)
2Cu + O2 = 2CuO
CuO + 2HCl = CuCl2 + H2O
CuCl2 + 2NaOH = Cu(OH)2 + 2NaCl
Cu(OH)2 = CuO + H2O
В)
2Na + 2H2O = 2NaOH + H2
2NaOH + CO2 = Na2CO3 + H2O
Na : S : O = 36.51/23 : 25.39/32 : 38.1/16 = 1.59/0.8 : 0.8/0.8 : 2.38/0.8 = 2 : 1 : 3
Na2SO3
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Answers & Comments
А)
2Ba + O2 = 2BaO
BaO + H2O = Ba(OH)2
Ba(OH)2 + 2HNO3 = Ba(NO3)2 + 2H2O
Б)
2Cu + O2 = 2CuO
CuO + 2HCl = CuCl2 + H2O
CuCl2 + 2NaOH = Cu(OH)2 + 2NaCl
Cu(OH)2 = CuO + H2O
В)
2Na + 2H2O = 2NaOH + H2
2NaOH + CO2 = Na2CO3 + H2O
Na : S : O = 36.51/23 : 25.39/32 : 38.1/16 = 1.59/0.8 : 0.8/0.8 : 2.38/0.8 = 2 : 1 : 3
Na2SO3