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【段考】國三數學上學期
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109年 - 109學年度台南市忠孝國中九年級第一次段考(期中考)#109927
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2. Calculate the equilibrium concentration of and in a 1.00 M solution of H3PO4 where the , for H3PO4 are , , and , respectively. Besides, what’s the pH of this solution?
#471023
3. You have a concentration cell with Cu electrodes and = 1.00 M (right side) and = 1.0x M (left side). Calculate the potential for this cell at 25℃. ( → Cu;= 0.34 V;
#471024
4. Carbon tetrachloride, CCl4, has a vapor pressure of 213 torr at 40℃ and 836 torr at 80℃. What’s the normal boiling point of CCl4 (in K)? (8%; R: 8.314 J・ = 0.082 L・atm・)
#471025
5. Consider the following reaction at 25℃: The value of ∆Ho and ∆So are -58 kJ/mole and -176.6 J/K.mol, respectively. Calculate the value of K at 100℃ assuming ∆Ho and ∆So do not depend on the temperature. (6%; R: 8.314 J・ = 0.082 L・atm・)
#471026
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#471032
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#471033