Ile cm3 roztworu wodorotlenku potasu o stężeniu 0,25 mol/dm3 przereaguje z roztworem zawierającym 15 g kwasu octowego?
KOH + CH3COOH ----> CH3COOK + H2O
56g 60g
56g KOH - 60g CH3COOH
xg KOH - 15g CH3COOH
x=15*56/60 = 14g KOH
n= 14g/56g/mol( gram sie skraca)=0,25 mola
V=0,25/0,25=1 dm3
V=1dm3= 1000 cm3
Licze na naj :)
mCH3COOH=60u
KOH + CH3COOH ---> CH3COOK + H2O
1mol KOH ----- 60g CH3COOH
xmoli KOH ----- 15g CH3COOH
x = 0,25mola KOH
n=0,25mola
Cm=0,25mol/dm3
v=n/Cm
v=0,25/0,25
v = 1dm3
v=1000cm3
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KOH + CH3COOH ----> CH3COOK + H2O
56g 60g
56g KOH - 60g CH3COOH
xg KOH - 15g CH3COOH
x=15*56/60 = 14g KOH
n= 14g/56g/mol( gram sie skraca)=0,25 mola
V=0,25/0,25=1 dm3
V=1dm3= 1000 cm3
Licze na naj :)
mCH3COOH=60u
KOH + CH3COOH ---> CH3COOK + H2O
1mol KOH ----- 60g CH3COOH
xmoli KOH ----- 15g CH3COOH
x = 0,25mola KOH
n=0,25mola
Cm=0,25mol/dm3
v=n/Cm
v=0,25/0,25
v = 1dm3
v=1000cm3