What is autoionization, and how is it important for water?What type of non-covalent interaction is known as the strongest dipole-dipole force?

CHEMISTRY ASSIGNMENT
1.What is the shape of water?

2.What is autoionization, and how is it important for water?
3.Name the three non-covalent forces discussed in this module.

4.What type of non-covalent interaction is known as the strongest dipole-dipole force?

5.Would the following be a hydrogen donor or acceptor? Or both?

6.How does the strength of London forces change with increasing molecular weight? Explain briefly.

7.Calculate the pH of a solution containing 0.12 M of OH .

8.If a solution contains 0.00023M of H+, then what is the OH concentration?

9.If a solution contains 1.67 x 10-8 M OH , then what is H + concentration?

10.A solution contains H+ at a concentration of 1.67 x 10-6 M. Is the solution acidic, basic, or neutral? Explain briefly.

11.What is the concentration, in M, of water as a pure liquid?
12.Define Keq and K w .

13.Identify the acid, conjugate base, and proton in the following reaction.

14.A buffer system has a pKa of 8.5. What is its effective buffering range?

15.A buffer system has [H +] = 1.2 x 10 -6 , [A ] = 1.2 x 10 -6 , and [HA] = 3.2 x
10 -5 . What is its corresponding Ka value?

16.A buffer system has [H +] = 1.2 x 10 -6 , [A ] = 1.2 x 10 -6 , and [HA] = 3.2 x 10 -5 . What is its corresponding Ka value?

17.Ice melts at room temperature. What is the sign for ΔG in this reaction?
18.Butane combusts in the air by the following reaction:

C 4 H 10 (l) + 6.5 O2 (g)

4 CO 2 (g) + 5 H 2 O (g)

What is the sign (+ or -) of
Δ G, Δ H, and Δ S in this reaction?
19.
What is the role of ATP in helping a non-spontaneous reaction occur?

What is autoionization, and how is it important for water?What type of non-covalent interaction is known as the strongest dipole-dipole force?
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