2013,广东化学试题（2013, Guangdong chemical examination questions）.docVIP

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2013,广东化学试题（2013, Guangdong chemical examination questions）.doc

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2013,广东化学试题（2013, Guangdong chemical examination questions）

2013,广东化学试题（2013, Guangdong chemical examination questions） 7. the following statement is correct A. sugar compounds have the same functional groups of B. esters are the major components of the formation of fruit flavor C. oil saponification reaction of fatty acid and alcohol D. protein hydrolysate containing carboxyl and hydroxyl groups. In a group of 8. water soluble ions can coexist is A.Na+, Al3+, Cl-, CO32-, B.H+, Na+, Fe2+, MnO4- C.K+, Ca2+, Cl-, NO3- B. K+, NH4+, OH-, SO42- 9. set nA to the number of Avogadro constant, the following statement is correct A. under normal temperature and pressure, 8gO2 contains 4nA electronic There are nA NH4+ B.1L0.1molL-1 in ammonia water C. under the standard condition, 22.4L hydrochloric acid containing nA HCl molecules D.1molNa is completely oxidized to form Na2O2, lost 2nA 10. which of the following statements I and II are correct and have a causal relationship is The following 11. measures is not reasonable A. with SO2 bleaching pulp and straw braid with B. sulfuric acid cleaning scale in boiler The coarse silicon D. reduction from SiO2 to Na2S is used as precipitant with coke C. under high temperature, removing waste water in Cu2 + and Hg2 + 12.50 degrees, each of the following solution, concentration of ion material is correct A.pH=4 acetic acid: C (H+) =4.0molL-1 B. saturated sodium bicarbonate solution: C (Na+) = C (HCO3-) C. saturated salt water: C (Na+) + C (H+) = C (Cl-) +c (OH-) Soda solution pH=12: C D. (OH-) =1.0 * 10-2molL-1 The relative position of the 22. elements of R, X, T, Z, Q in the periodic table of elements as shown in the following table, including R and H2 elemental in the dark and violent explosion. The following is the correct judgment A. non metallic: ZTX The number of electronic B.R and Q is 26 C. R TQ: gaseous hydride stability The most expensive oxide hydrates D. acid: TQ 23, the following experimental phenomena and corresponding conclusions are correct Conclusion the option operation phenomeno