Răspuns:
Explicație:
4 K+ O2 =2 K2O a=O2
K2O + H2O=2KOH b=H2O
KOH + HCl = KCl + H2O d=HCl
2KCl+ H2SO4= K2SO4 +2HCl f=H2SO4
b.
xg 73g
KOH + HCl = KCl + H2O
56g 36,5g
x=56 . 73 : 36,5 =112 g KOH------>acesta este md sol. de KOH
-se afla ms sol. de KOH
ms=md .100 :c
ms =112 .100 : 20=560 g sol. KOH
MKOH=39 +16 +1=56------>56g/moli
MHCl=1+35,5=36,5----->36,5g/moli