主题：【原创】专业英语试题（请大家多多补充）

1. The Joule-Thomson coefficient of a gas, (∂T/∂P)H ,is measured under conditions of constant
A. energy      B. enthalpy      C. entropy
      D. pressure      E. temperature
2. The vapor pressure of pure acetone is 347 mmHg, A mixture of 58.0g of acetone and 2.0g of water is made. According to Raoult’s Law, what is the partial vapor pressure is the acetone in this mixture?
A. 382 mmHg  B. 335 mmHg  C. 312 mmHg
D. 298 mmHgE. 242 mmHg
3.    According to Le Chatelier’s Principle the addition of heat to the following reaction
          CO2(g)+2H2O(g) →CH4(g)+2O2(g)
    will cause it to shift the right. This  reaction can therefore be described as

A. spontaneous    B. endothermic    C. unimolecular
D. exothermic    E. adiabatic
4.    If the value of △G° for a given reaction is known, we may determine all of the following EXCEPT the

A. direction of spontaneous change at standard conditions
B. position of equilibrium at the temperature for which △G° is known.
C. maximum amount  of useful work that can be produced at standard conditions.
D. stability of the products as compared to the reactants at standard conditions
E. usefulness of a catalyst in controlling the reaction
5.    Consider the two half reactions
                    Ag→ Ag++e-  E0=0.8v
                    Zn2++2e- → Zn  E0 =-0.76v
Which of the following statements is/are true?
A. The standard potential for the reaction is +1.56v
B. As written, the reaction is spontaneous.
C. The sign of the reaction potential indicates whether the reaction is spontaneous or not
D. All of above
E. None of above

6.    Periodic acid oxidation of D-glucose in aqueous solution gives
A. 4HCOOH+2CH2O
B.2HCOOH+4CH2O
C.5HCOOH+CO2
D.5HCOOH+CH2O
7.    Alkyens can be partically hydrogenated to alkenes by used of metal catalysis and H2 gas. The resulting alkenes have which sterostructure?
A. trans        B. cis      C. misture of cis and trans
D. stereostructure varies with  temperature of reaction
E. stereostructure varies with  pressure of reaction
8.    To distiguish among primary, secondary and tertiary  alcohols, one would use the following experimental method.
A. Sandmeyer reaction
B. Witting reaction
C. Lucas Test
D. Ninhydrin test
E. Tollen’s reagent
9.    Which of the following is designated dimethylamin-propane under IUPAC rules of nomenclature?

A. CH3CH2CH2N(CH3)2
B. (CH3)2CHCH2NH2
C. (CH3)3CNH2
D. (CH3)2CHCN
E. None of the above
10.A secondary alcohol is formed through oxymercuration demercuration of which of the following?
A. 2-methyl-1-bromproene
B. 2,2-diethyl-penteneC. hexane
D. 1-hexene
E.1-hexanal
11.What is the oxidization number of chlorine in ClO4-
A.  +1  B.  +3  C.  +5  D.  +7  E.  +8
12    which of the following substances has the least ionic character in its bond?

A. CCl4  B. KCl  C. MgCl2  D. NaCl  E. BaCl2
13. Which of the following species contain no covalent bonds

A. KCl, B2H6,PH6
B. KCl, H2SO4
C. O2, PH3, B2H6
D, KCl
E. KCl, B2H6
14.    Brass is an alloy of

A. copper and tin
  B. copper and zinc
  C. aluminum and nickel
  D. titanium and potassium
  E. manganese and magnesium