Odpowiedź:
1.
R KNO3 = 65g/100gH2O (T = 40*C)
m KNO3 (ms) = 65 g
mr = 165 g (ms (65g) + mH2O (100g))
Cp = (65g : 165 g) * 100% = 39,4%
2.
Cp = 15%
mr = 100g
ms = 15 g
mH2O = 85 g
15 g substancji - 85 g wody
x g substancji - 100g wody
x = (15 * 100) : 85 = 17,65 g
Odp. Rozpuszczalność soli wynosi 17,65 g/100gH2O
3.
mr = 2000g
Cp = 5%
2000g - 100%
xg - 5%
x = (5 * 2000) : 100 = 100g
ms = 100g
mH2O = 2000g - 100g = 1900g
4.
R KClO4 = 18g/100gH2O
mH2O = 200g
m KClO4 = 2 * 18g = 36 g
5.
Vr = 500 cm3
d = 1,04 g/cm3
Cp = 14 %
mr = 1,04g * 500 cm3 = 520g
m NH4Cl = (520g * 14%) : 100% = 72,8g
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Odpowiedź:
1.
R KNO3 = 65g/100gH2O (T = 40*C)
m KNO3 (ms) = 65 g
mr = 165 g (ms (65g) + mH2O (100g))
Cp = (65g : 165 g) * 100% = 39,4%
2.
Cp = 15%
mr = 100g
ms = 15 g
mH2O = 85 g
15 g substancji - 85 g wody
x g substancji - 100g wody
x = (15 * 100) : 85 = 17,65 g
Odp. Rozpuszczalność soli wynosi 17,65 g/100gH2O
3.
mr = 2000g
Cp = 5%
2000g - 100%
xg - 5%
x = (5 * 2000) : 100 = 100g
ms = 100g
mH2O = 2000g - 100g = 1900g
4.
R KClO4 = 18g/100gH2O
mH2O = 200g
m KClO4 = 2 * 18g = 36 g
5.
Vr = 500 cm3
d = 1,04 g/cm3
Cp = 14 %
mr = 1,04g * 500 cm3 = 520g
m NH4Cl = (520g * 14%) : 100% = 72,8g