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Write the balanced reaction of hydroxide ion with hydrofluoric acid, HF, to for fluoride ion and water.  Identify each species as either an acid or a base.

Write the balanced reaction of hydroxide ion with hydrofluoric acid, HF, to for fluoride ion and water.  Identify each species as either an acid or a base.

Introductory Chemistry: An Active Learning Approach
Introductory Chemistry: An Active Learning Approach
6th Edition
ISBN:9781305079250
Author:Mark S. Cracolice, Ed Peters
Publisher:Mark S. Cracolice, Ed Peters
Chapter17: Acid-base(proton Transfer) Reactions
Section: Chapter Questions
Problem 64E: Classify each of the following statements as true or false: aAll Brnsted-Lowry acids are Arrhenius...
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1. Write the balanced reaction of hydroxide ion with hydrofluoric acid, HF, to for fluoride ion and water.  Identify each species as either an acid or a base.
2. For the following reactions label each species as either an acid or a base.  Indicate the species that are conjugates of one another.
a) HSO4- + NH3 ⇌ SO42- + NH4+
b) HPO42- + NH4+ ⇌ H2PO4- + NH3
c) Al(H2O)63+ + H2O ⇌ Al(H2O)5OH2+ + H3O+
d) SO32- + NH4+ ⇌ HSO3- + NH3
3. What are the concentrations of H3O+ and OH- in each of the following:
a) 1.2 mol dm-3 HBr
b) 0.32 mol dm-3 KOH
c) 0.085 mol dm-3  Ca(OH)2
d) 0.38 mol dm-3  HNO3
4. The following are solution concentrations.  Indicate whether each is acidic, neutral or basic:
a) 5 x 10-6 mol dm-3  H3O+
b) 5 x 10-9 mol dm-3  OH-
c) 1 x 10-7 mol dm-3  OH-
d) 2 x 10-9 mol dm-3  H3O+
5. A solution of washing soda (sodium carbonate, Na2CO3) has a hydroxide ion concentration of 0.0040 mol dm-3.  What is the pH at 25°C?
6. A detergent solution has a pH of 11.63 at 25°C.  What is the hydroxide ion concentration?
7. A 1dm3 aqueous solution contains 5.80g of sodium hydroxide, NaOH.  What is the pH of the solution at 25°C?
8. A 1dm3 aqueous solution contains 6.78g of barium hydroxide, Ba(OH)2.  What is the pH of the solution at 25°C?

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