Question

DAU COROANA!!!REPEEDEE
Prin electroliza apei acidulate se obtin 8g hidrogen.Calculeaza:
a)Masa de oxigen degajata
b)Masa de apa utilizata

Answer 1

MH2=2AH=2*1=2g/mol

H2O => H2 + 1/2O2

a) 2g H2................0,5*32g O2
8g H2....................xg O2

x=16*8/2= Calculeaza !!

b) MH2O=2AH+AO=2*1+16=18g/mol

18g H2O...................2g H2
xg H2O.....................8g H2

x=18*8/2= Calculeaza !