6) When titrating a strong monoprotic acid and KOH at 25 degrees Celsius, the a)

Question

6) When titrating a strong monoprotic acid and KOH at 25 degrees Celsius, the

a) pH will be less than 7 at the equivalance point

b) pH will be greater than 7 at the equivalance point

c) titration will require more moles of base than acid to reach the equivalance point

d) pH will be equal to more moles of acid than base to reach the equivalance point

7) When titrating a weak monoprotic acid with NaOH at 25 degrees Celsius. the

a) pH will be less than 7 at the equivalance point

b) pH will be equal to 7 at the equivalance point

c) pH will be greater than 7 at the equivalance point

d) titration will require more moles of base than acid to reach the equivalance point

e) titration will require more moles of acid than base to reach the equivalance point

8) When titrating a monoprotic strong acid with a weak base at 25 degrees Celsius. the

a) pH will be 7 at eqiv. point

b) pH greater than 7 at equiv. point

c) titration will require more moles of base than acid at equiv. point

d)titration will require more moles of acid than base

e) pH will be less than 7 at equiv. point

9)_______is a thermodynamic function that increases with the number of energetically equivalant ways to arrange componants of a system to achieve a particular state

a) heat of reaction

b) free energy

c) entroy

d) enthalpy

e)molar equivalance

10) Consider a reaction that has a positive delta H and positive delta S. Which of the following statements is TRUE?

a) the reaction will be sponatneous at hgh temps

b) reaction will be spontaneous at all temps.

c) reaction will be nonspontaneous at all temps.

d) reaction will be nonspontaneous at high temps.

e) not possible to determine without more information

11) Consider a reaction that has a negative delta H and a positive delta S. Which is true?

a) the reaction will be spontaneous at only high temps.

b) spontaneous at all temps.

c) nonspontaneous at all temps.

d) only nonsponatneous at high temps

e) not possible to determine without more information

12) For a given compound, list the decreasing order of entropy for a solid, liquid, and gas

a) solid>gas>liquid

b) liquid>solid>gas

c) gas>liquid>solid

d) gas>solid>liquid

e) solid>liquid>gas

13) Identify the FALSE statement

a) the entrpyu of a gas is greater than the entropy of a liquid

b) entropy generally increases with molecular complexity

c) free atoms have greater entropy than molecules

d) entropy increases with dissolution

e) for noble gases, entropy increases with size

Explanation / Answer

6.d

7.c

8.b

9.d

10.c

11.b

12.e

13.b

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