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1£¬(b) 0. 2 mol¡¤kg¨D1 µÄÕáÌÇ > (c) 0. 2 mol¡¤kg¨D1 µÄ NaCl > (a) 0. 2 mol¡¤kg¨D1 µÄ Na2SO4

2£¬ (a) CaO(s) > (b) CaCl2(s) > (d) H2O(s) > (c) CO2(s)

3£¬(a) Ca > (b)Cu > (c)Si

4£¬(a) Ti > (b) Cr > (c) Cu

5£¬(a) KMnO4(1. 389 V) > (b) Cl2(1. 3583 V) > (c) K2Cr2O7 (1. 075 V)

6£¬(c) E( Fe3+/Fe2+) > (a) E( Cu2+/Cu) > (b) E( Fe2+/Fe)

7£¬(a) HAc > (b) HF > (c)H3PO4

8£¬(a)[Ca(edta)]2¨D > (b)[Ca(ebt)]¨D

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= £­1254. 12 kJ¡¤mol?1

32 g N2H4 µÄÎïÖʵÄÁ¿Îª£ºn = 32 g / (14¡Á2+1¡Á4) g?mol?1 = 1. 0 mol 1.0 mol N2H4 ÍêÈ«·´Ó¦£¬Æä·´Ó¦½ø¶ÈΪ 0. 5 mol£¬ËùÒÔ£º Q = Qp = ?H = £­1254. 12 kJ¡¤mol?1¡Á0. 5 mol = £­627. 06 kJ

2£¬E(Sn2?/Sn)?E¦È?E(Pb2?/Pb)?E¦È?0. 059lg[c(Sn2?)/c¦È]??0. 1375 V 20. 059lg[c(Pb2?)/c¦È]2

0.059 ??0. 1262 V?lg[0. 1 mol?L?1/1. 0 mol?L?1] V??0. 1557 V2ËùÒÔ£¬µç³ØµÄµç¶¯ÊÆ E = 0. 1375 V¨D(0. 1557) V = 0. 0182 V

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