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Proszę o rozwiązanie grupy A. Daje naj!
1. C
2. B
3. A
4. D
5.B
6. C
7. B
8. A
9. A
10. D
11.
2-d
3-b
4-c
5-a
12.
a) P
b) F
c) F
d) P
13. KOH
K - O - H
14.
Ca + 2H20 ---> Ca(OH)2 + H2^
CaO + H20 ---> Ca(OH)2
15.
Ba(OH)2 ---H2O---> Ba[2+] + 2OH[-]
KOH ---H2O---> K[+] + OH[-]
16.
mw = 147g
[M]Ca = 40g/mol
[M]H2O = 18 g/mol
[M]Ca(OH)2 = 74 g/mol
Przereaguje 2 * 18 = 36 g wody.
147 - 36 = 111g
Powstanie 74g wodorotlenku wapnia.
ms = 74g
mw = 111g
mr = ms + m rozpuszczalnika
mr = 111 + 74
mr = 185[g]
Cp = ms * 100 / mr
Cp = 74 * 100 / 185
Cp = 40%
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1. C
2. B
3. A
4. D
5.B
6. C
7. B
8. A
9. A
10. D
11.
2-d
3-b
4-c
5-a
12.
a) P
b) F
c) F
d) P
13. KOH
K - O - H
14.
Ca + 2H20 ---> Ca(OH)2 + H2^
CaO + H20 ---> Ca(OH)2
15.
Ba(OH)2 ---H2O---> Ba[2+] + 2OH[-]
KOH ---H2O---> K[+] + OH[-]
16.
mw = 147g
Ca + 2H20 ---> Ca(OH)2 + H2^
[M]Ca = 40g/mol
[M]H2O = 18 g/mol
[M]Ca(OH)2 = 74 g/mol
Przereaguje 2 * 18 = 36 g wody.
147 - 36 = 111g
Powstanie 74g wodorotlenku wapnia.
ms = 74g
mw = 111g
mr = ms + m rozpuszczalnika
mr = 111 + 74
mr = 185[g]
Cp = ms * 100 / mr
Cp = 74 * 100 / 185
Cp = 40%