1.  Consider the following reaction: 2SO_2(g)  +  O_2(g)  ⇄  2SO_3(g)     ∆H =  -197  kJ/mol

            Which of the following will not shift the equilibrium to the right?

            A.        Adding more O₂

            B.        Adding a catalyst

            C.        Increasing the pressure

            D.        Lowing the temperature

2.  Consider the following equilibrium system: CaCO_3(s)  ⇄ CaO_(s) +  CO_2(g)

            Which one of the following changes would cause the above system to shift left?

            A.        Add more CaO

            B.        Remove CaCO₃

            C.        Decrease volume

            D.        Increase surface area of CaO

3.  Consider the following equilibrium: SO₂Cl_2(g)  +  energy  ⇄  SO_2(g)  +  Cl_2(g)

            When the temperature is decreased, the equilibrium shifts

            A.        Left and [ SO₂Cl₂ ] increases

            B.         Left and [ SO₂Cl₂ ] decreases

            C.        Right and [ SO₂Cl₂ ] increases

            D.        Right and [ SO₂Cl₂ ] increases

4.  Consider the following equilibrium: 2SO_3(g)   ⇄  2SO_2(g)  +  O_2(g)

            The volume of the system is decreased at a constant temperature. A new state of equilibrium is established by a shift of the original equilibrium to the

            A. Left and [SO₃] increases

            B. Right and [SO₃] decreases

            C. Left and [SO₃] remains unchanged

            D. Right and [SO₃] remains unchanged

5.  Consider the following equilibrium system: CO_2(g)   +  H_2(g)  ⇄  CO_(g)  +  H₂O_(g)

            Which of the following, when added to the system above, would result in a net decrease in [H₂O]?

            A. CO₂

            B. H₂

            C. CO

            D. H₂

6.   Consider the following equilibrium: C_(s)  +  2H_2(g)  ⇄ CH_4(g)  +  74 kJ

            When a small amount of solid C is added to the system

            A. [H₂] decreases

            B. [CH₄] increases

            C. The temperature increases

            D. All concentrations remain constant

7.   Consider the following equilibrium: 2NO_(g)  +  Cl_2(g)  ⇄  2NOCl_(g)

            At constant temperature and volume, Cl₂ is added to the above equilibrium system.

            As equilibrium re-establishes, the

            A. [NOCl] will decrease

            B. The temperature increases

            C. [NO] will increase

            D. [NOCl] will increase

8.  Consider the following equilibrium: Cl₂O_7(g)   +8H_2(g)  ⇄  2HCl_(g)  +  7H₂O_(g)

            Which of the following would increase the number of moles of HCl?

            A. Increase [H₂O]

            B. Increase [Cl₂O₇]

            C. Increase total pressure

            D. Increase volume of the system

9.  Consider the following equilibrium: 2HI_(g)  ⇄     H_{2(g)    +} I_2(g)     ∆H = -68kJ

            Which of the following would cause the equilibrium to shift right?

            A. Increasing the volume

            B. Decreasing the volume

            C. Increasing the temperature

            D. Decreasing the temperature

10.  A 1.00 L flask contains a gaseous equilibrium system. The addition of reactants to this flask results in a

            A. Shift to the left and decrease in the concentration of products

            B. Shift to the left and increase in the concentration of products

            C. Shift to the right and decrease in the concentration of products

            D. Shift to the right and increase in the concentration of products

11.  When the temperature of an equilibrium system is increased, the equilibrium always shifts to favor the

            A. Exothermic reaction

            B. Endothermic reaction

            C. Formation of products

            D. Formation of reactants

12.   An equilibrium system shifts left when the

            A. Rate of the forward reaction is equal to the rate of the reverse reaction

            B. Rate of the forward reaction is less than the rate of the reverse reaction

            C. Rate of the forward reaction is greater than the rate of the reverse reaction

            A. Rate of the forward reaction and the rate of the reverse reaction are constant

13.   Consider the following equilibrium: 2SO_2(g)   +  O_2(g)   ⇄   2SO_3(g) ∆H = -198 kJ

            There will be no shift in the equilibrium when

            A. More O₂ is added

            B. Catalyst is added

            C. The volume is increased

            D. The temperature is increased

14.   Consider the following equilibrium: N₂O_4(g)  +  58 kJ  ⇄   2NO_2(g)

            The equilibrium shifts right when

            A. NO₂ is added

            B. N₂O₄ is removed

            C. The temperature is decreased

            D. The volume of the system is increased

15.  Consider the following equilibrium: 

                        energy   +  2NaClO_3(s)  ⇌ 2NaCl_(s)   +   3O_2(g)

            Which of the following will cause a shift to the left?

            A.        adding more O₂

            B.         adding more NaCl

            C.        removing some NaClO₃

            D.        increasing the temperature

» Tin mới nhất:

• Ý nghĩa của hàm cận biện trong kinh tế. (17/07/2022)
• Xây dựng phương trình vi phân trong thực tiễn (16/07/2022)
• Một số ví dụ về công thức gần đúng (12/07/2022)
• Doanh thu lớn nhất. (11/07/2022)
• Xác định hàm lượng Cl- trong nước máy (18/06/2022)

» Các tin khác:

• Tích phân suy rộng loại 1 (17/12/2016)
• Xấp xỉ tích phân (17/12/2016)
• Bài toán chia táo (15/12/2016)
• Đôi tình nhân và thánh toán (15/12/2016)
• Phương Án Tối Ưu (18/11/2016)
• Câu chuyện vui: Nguyên hàm (18/11/2016)
• Bài tập phương pháp Euler (17/11/2016)
• Bài tập giới hạn (17/11/2016)
• Bài toán tích phân bất định (tt) (17/11/2016)
• Bài toán tích phân bất định: (15/11/2016)