Oblicz stężenie molowe kwasu octowego, jeżeli 40g tego kwasu znajduję się w 300cm^3 roztworu.
M CH3COOH=60g/mol
m 40g
n=m/M
n=40/60
n = 0,67mola
n=0,67mola
v=0,3dm3
Cm=n/v
Cm=0,67/0,3
Cm = 2,23mol/dm3
M CH3COOH= 60 g/mol
V= 300 cm3 = 0.3 dm3
40 g ------------ x mol
60 g ------------ 1 mol
x= 0.67 mol
Cm= n : V = 0,67 mol : 0,3 dm3 = 2.23 mol/dm3
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M CH3COOH=60g/mol
m 40g
n=m/M
n=40/60
n = 0,67mola
n=0,67mola
v=0,3dm3
Cm=n/v
Cm=0,67/0,3
Cm = 2,23mol/dm3
M CH3COOH= 60 g/mol
V= 300 cm3 = 0.3 dm3
40 g ------------ x mol
60 g ------------ 1 mol
x= 0.67 mol
Cm= n : V = 0,67 mol : 0,3 dm3 = 2.23 mol/dm3