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2014-06-01T18:32:18+03:00
2*58.5    2*18
2NaCl+2H2O=2NaOH+Cl2+H2
50g       x

M NaCl=23+35.5=58.5 g/mol sau u.m.
M H2O=2+16=18g/mol sau u.m.

x=(50*2*18)/(2*58.5)
x=1800/117
x=15.38 g H2O

C=md*100 /ms
C=15.38*100  /250
C=6.15%

C final=15.38*100/350
C final=4.39%
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