دليل المتدرب -...
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1400 0C
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7 XYX
Y
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9 0.1 M0.02 mol / L
pOH
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atom g X3 F
X2O3
X2O
XO2
XO
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12
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+7
+5
+4
+3
+2
30 26 25 24 23 21
1315
3131
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BaCl2 XH2O 2.9603 g
2.3923 g
Ba =137 , C =35.5 , O = 16 , H = 1
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II
II
III
III
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pH5.5
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IIIIII
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CH3COOH CH3COO- + H
+
HC
3435
74 g mol
C = 12 , O = 16 , H = 1
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A H2SO4 C2
B
C K2Cr2O7
A , B
A pH7
2000CB
K2Cr2O7
A , B
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41 H2SO4
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2 mol
2,1
2,1
2,2
2,2
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10000 CAuC3
Au = 196.89 u , C = 35.5 u ]
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45 KP
N2(g) + 3H2(g) 2NH3(g)
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