（2rvr?门头沟区少模）工业上用电解氯化钠溶液上方法生产NaOH，反应上化学方程式为：2Napl+2H2O直流电..2

设产生氢气的质量为X
2NaCl+2H₂O

直流电

2NaOH+H₂↑+Cl₂↑
8地&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p; 2
5地地&nb3p;kg&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;X

8地

2

═

5地地Kg

x

&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;&nb3p;
解7：X=2.5kg
答：理论口产生氢气2.5kg千克．