1)Finish the following reactions when acids are added to water

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1)Finish the following reactions when acids are added to water.

a. H2SO4 + H2O -> HSO4- + H3O+  (remove an H+ from the acid and add to the                   base)

b. HCl + OH- ->

c. NH3 + H2O ->

d. HCl + NH3 ->

 

2) What are the conjugate bases of these acids? (Remove an H+ and write what is left)

Original acid                         Conjugate base                                              

 HNO3                                NO3- 

 H2O

  H3O+       

H2SO4

HBr

HCO3-

 

3) What are the conjugate acids of these bases? (add an H+)

Original Base                        Conjugate Acid                                             

OH-                                                            H2O

H2O      

HCO3-

SO42-

ClO4-

 

4) Which of the following represent conjugate acid-base pairs? 

1. H2O, H3O+
2. OH-, HNO3
3. H2SO4, SO4-2
4. HC2H3O2, C2H3O2-

 

5) Calculate the [H+] in a solution in which [OH-] = 2.0 x 10-2 M. (I used: [H+][OH-]=1x10-14)

Is this solution acidic, neutral, or basic? 

 

 6) Calculate the [OH-] in a solution in which [H+] = 3.99 x 10-5 M. (I used: [H+][OH-]=1x10-14)

Is this solution acidic, neutral, or basic?

 

7) Convert each of the following into pH. (-log[H+] or -log[OH-] and then use pH + pOH = 14 if necessary)

Identify each as an acidic(A), neutral(N), or basic(B). 

a. 0.0015 M H+

b. 5.0 x 10-9 M H+

c. 3.27 x 10-4 M OH-

d. 1.00 x 10-12 M OH-

 

8) Convert each of the following into pOH. 

Identify each as an acidic(A), neutral(N), or basic(B).

a. 0.783 M OH-

b. 6.87 x 10-12 M OH-

c. 1.1 x 10-9 M H+

d.  0.0032 M H+

 

9) What is the pH, pOH, [H+], or [OH-] for a [0.156] molar solution of hydrochloric acid (releases H+)? 

 

10) What is the pH, pOH, [H+], or [OH-] for a 3.2 molar solution of sodium hydroxide (releases OH-)?