Răspunsuri

2014-05-10T14:41:57+03:00
NaOH + HCl = NaCl + HOH
M_{NaOH} = 23+16+1= 40 g/mol 
 M_{HCl} = 1+35,5=36,5 g/mol
n= \frac{m}{M} => m=1*36,5=36,5 g HCl
 \frac{x}{40} = \frac{36,5}{36,5} => x= \frac{36,5*40}{36,5}  
=> x=40 g NaOH
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