Question

69 g Na reactioneaza cu apa. Calculati volumul de hidrogen degajat( Volumul molar=22,4 l)

Answer 1

 

         69 g                                  xg
        2 Na +2 H2O=2 NaOH + H2
         2.23 g                               2g

x=69.2:46=3 gH
2g H-------1mol H
3 g------------------y
y=3:2=1,5 moli H
V=22,4.1,5=33,6 litri H