执信、广雅、二中、六中2014届高二联考(化学)(国外英文资料).docVIP

执信、广雅、二中、六中2014届高二联考(化学) He is a senior in the class of 2014 The study Note: Before the exam, please fill in your name and test number on the answer sheet with the signature pen of the black letter. Select the answer with a 2B pencil and fill it with black in the corresponding position. If you want to change it, use the eraser to clean it, then choose the other answer. Cant answer on the examination paper. The answer must be written in the corresponding position in the designated section of the answer sheet. If you need to change, cross out the original answer and then write the new answer. No pencil and correction fluid is allowed, and no answer to the above requirement is null and void. Relative atomic mass: Cu 64 One, select the problem (including 12 small question, each small question 3, total 36 points. Each topic has one choice to meet the question). The following statements are related to the chemical reaction energy changes, and the correct ones are The heat of reaction is the heat released by the reaction The reaction rate of heat reactions is always greater than the reaction rate of the endothermic reaction The change in enthalpy in the chemical reaction only contains the energy changes of the bond and the formation D. With the same pressure, H2 (g) + Cl2 (g) = 2HCl (g) delta H, which reacts under light and ignition conditions, the same as delta H The following statements about metals are correct A. stainless steel is not easy to rust because of the dense coating on the surface B. pure silver vessels dimmed in the air because of electrochemical corrosion C. When the coating of galvanized iron products is damaged, the coating can also protect the iron products D. can connect the underground oil pipe to the positive electrode of the dc power source to protect it from corrosion The following hot chemical equations are known: 2 zinc (s) + O2 (g) = 2 zno (s) Δ H = 702.2 kJ mol - 1 Hg (l) + o2 (g) = 1/2 HgO (s) Δ H = 90.7 kJ mol - 1 Thus the zinc (s) + HgO (s) =