Помогите по химии. Срочнооо!

Question

Помогите по химии. Срочнооо!

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Answer 1

1
1) 2Na + 2H2O = 2NaOH + H2 
2) NaOH + HCl = NaCl + H2O
3) NaCl + AgNO3 = NaNO3 + AgCl 

2
2K+ OH2=2KOH
4KOH+SO4= K2SO4 +H2O

3
2Na+2H2O= 2NaOH+H2
2NaOH+CuSO4 = Na2SO4 +Cu(OH)2
Na2SO4+2HCl=2NaCl+H2SO4
2NaCl+Ca= CaCl2+2Na