2.E(Co/Co+)(please select one from the three options:(a)>,(b)=,and (c) <)E (Cl2/CI),Co and CI (please select one from the two options:(a)can. (b)can not)exist concurrently in a solution. 3.If you knowK(Ca(OH)2)=5.5 105,the calculate pH of saturated solution of Ca(OH)2 the solubility of Ca(OH)2 is 一moL4 4.In the following substances,molecules possessing bond are molecules possessing three-electron o bond are _molecules possessing electron-lacking covalent bond are molecules possessing p-dzt bond are_ _(H2、B,Ho、He2、HPO4、HNO3、HBO3,only one substance is required to fill in each blank) 5.The essentials of a chemical reaction are 6.The three rules on the electron arrangement in molecular orbit and atomic orbit are same or different?What are the three rules (a) (b) 、(c) 7.The electron arrangement configuration in the molecular orbit of B2is its bond order is its stability is B2 (please select one from the three options:(a)>,(b)=,and (c)<):its magnetic feature is_ 8.If you know K(H2C204)=5.4×102,K82(H2C204)=5.4×105,please calculate the c(OH)= mol-L-of a solution of 0.10 mol-L K2C204,pH= 9.Please compare the relative thermal stability of the four carboxylate CucO3,CaCO3. NazCO,and MgCO,in terms of polarization effect of cations on CO,2 the order(from low to high)of melting points of Al2O3,AICl;and AlF3 10.The chemical reaction of the basic Zinc/Hg cell is given below: 第5页2．E (Co3＋ 2＋ / Co )_____（please select one from the three options: (a) >, (b) =, and (c) <）; E (Cl2 / Cl- )，Co3+ and Cl- _______（please select one from the two options: (a) can, (b)can not）exist concurrently in a solution. 3．If you know K ( Ca(OH) ) = 5.5 × 10-6 2 ， the calculate pH of saturated solution of Ca(OH) -1 2 __________ ，the solubility of Ca(OH)2 is ___________ mol·L 4．In the following substances, molecules possessing π bond are_____________， molecules possessing three-electron σ bond are_________， molecules possessing electron-lacking covalent bond are_________，molecules possessing p-dπ bond are________（H + 、 + 2 BB 4H10、He2 、H3PO4、HNO3、H3BO3，only one substance is required to fill in each blank）. 5．The essentials of a chemical reaction are _______________、 _________________、 _____________ 6．The three rules on the electron arrangement in molecular orbit and atomic orbit are same or different? What are the three rules (a)______ _______________、 (b)_____ ___________________、 (c) __________________________ . 7．The electron arrangement configuration in the molecular orbit of B2 － is ________________________；its bond order is __________________；its stability is ________ B2（please select one from the three options: (a) >, (b) =, and (c) <）；its magnetic feature is________. 8．If you know K ( H2C2O4 ) = 5.4 ×10-2，K ( H2C2O4 ) = 5.4 ×10-5 , please calculate the c (OH- ) = ______ mol·L-1of a solution of 0.10 mol·L-1 K2C2O4，pH = ______. 9．Please compare the relative thermal stability of the four carboxylate CuCO3, CaCO3, Na 2- 2CO3 and MgCO3 in terms of polarization effect of cations on CO3 ______________ ____________；the order (from low to high) of melting points of Al2O3, AlCl3 and AlF 3 _______________________________. 10．The chemical reaction of the basic Zinc/Hg cell is given below： 第 5 页