Расставьте коэффициенты в следующих схемах реакций :
1)NaH+H₂O→NaOH+H₂↑
2)K+H₂O→KOH+H₂↑
3)Na+HB₂→NaB₂+H₂↑
4)NaCl+H₂O→(эл.ток) NaOH+H₂↑+Cl₂↑
5)BaH₂+HCl→BaCl₂+H₂↑
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