QUESTION 16 What is the pH of a 0.20 M solution of the weak base ephedrine (Kb = 1.4 x 10-4) at 25 °C? O a. 2.28 O b. 11.72 O c. 8.40 O d. 13.30 O e. 2.80 QUESTION 17 Ksp for PbF2 is 4.0 x10-8. If a 0.034 M NaF solution is saturated with PbF2, what is [Pb2+] in solution? O a. 1.2 x 10-6 M Ob.4.6 x 10-11 M OG 1.4 x 10-9 M Od. 1.0 x 10-3 M Oe3.5 x 10-5 M
Ionic Equilibrium
Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.
Arrhenius Acid
Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.
Bronsted Lowry Base In Inorganic Chemistry
Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.
![QUESTION 16
What is the pH of a 0.20 M solution of the weak base ephedrine (Kb = 1.4 x 10-4) at 25 °C?
O a. 2.28
O b. 11.72
O c. 8.40
O d. 13.30
O e. 2.80
QUESTION 17
Ksp for PbF2 is 4.0 x10-8. If a 0.034 M NaF solution is saturated with PbF2, what is [Pb²+] in solution?
O a. 1.2 x 10-6 M
Ob. 4.6 x 10-11 M
OC. 1.4 x 10-9 M
Od. 1.0 x 10-3 M
Oe. 3.5 x 10-5 M](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4126b89b-6ee3-437f-8fcf-aa0e90855818%2F2ef6bbe8-497a-41f8-9a56-87c9a790b504%2F8uwfokd_processed.jpeg&w=3840&q=75)
16.) A weak base will react with water to give hydroxide ions. So first we would write equation and ICE table and using Kb and concentration we Calculate concentration of hydroxide ion. From hydroxide ion concentration we can first Calculate pOH and then pH.
17.) First we would calculate concentration of F- present in solution due to NaF .
Then using the Ksp and concentration of F- we can calculate [Pb2+]
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