Надеюсь,что я правильно поняла задание +_+
https://ru-static.z-dn.net/files/d71/78777c1071c7f16253273e5b841115eb.jpg
1. <span>2 Na + 2 H2O = H2 + 2 NaOH
</span><span>Na2CO3 + H2O = CO2 + 2 NaOH</span>
2. <span>Ba(OH)2 + 2 HCl = BaCl2 + 2 H2O
</span><span>Ba(OH)2 + CuCl2 = BaCl2 + Cu(OH)<span>2
</span></span>3. <span>Na2CO3 = CO2 + Na2O
</span><span>Na2CO3 + H2O = CO2 + 2 NaOH
</span>4. <span>Fe + 2 HCl = FeCl2 + H<span>2
</span></span>Fe + CuCl2 = FeCl2 + Cu
во первых...мышьяк однозначно лишний
1. 2СН4 -> C2H2 + 3H2
2. С2H2 + H2O -> CH3-CHO
3. CH3-CHO + H2 -> CH3-CH2-OH
4. CH3-CH2-OH + HBr -> CH3-CH2-Br + H2O
5. CH3-CH2-Br + NaOH -> CH3-CH2-OH + NaBr
6. CH3-CH2-OH + CuO -> CH3-CHO + Cu + H2O
7. CH3- CHO + Ag2O -> CH3- COOH + 2Ag
8. CH3-COOH + NaOH -> CH3-COONa + H2O
