Acids
Name the conjugate base of HCl
What is Cl-
This is the the conjugate acid of NH3
What is NH4+?
pH for [H+] = 1 x 10-6 M
What is 6?
Water dissociation constant value
What is 1.0 x 10-14
Weak acids/bases produce ___________ conjugates.
What are strong?
NH4+ will ___ a proton to water in solution.
What is donate?
This is a strong base.
What is (any Group1A/2A)OHx
pOH value, if pH = 10
What is 4?
Species capable of donating a proton.
B/L Acid
This is the actual ion formed in acid/base reactions which changes pH.
What is hydronium, H3O+?
These acids dissociate completely.
What are strong acids?
This is the concentration of OH- ions in a 2.0M LiOH solution.
What is 2.0M?
The pH of a 0.1M weak acid solution is 2.87. Calculate the Ka.
What is 1.81 x 10-5
A solution that resists changes in pH.
What is a buffer?
This describes a substance which can either accept or donate protons.
What is amphoteric?
This describes weak acids
What is partial ionization?
This is the pH of a solution with a [H+] of 1.2x10-5 M.
What is 4.92?
0.2M H2CO3 and 0.2M Na2CO3 are used to create a buffer giving a pH of 6.38. Find the Ka of H2CO3.
4.17 x 10-7
Ka
Acid dissociation constant.
Rank the following bases from strongest to weakest: NH3, LiOH, H2O
What is LiOH > NH3 > H2O
This is the [H+] in a 0.001 M solution of HNO3
What is 1.0 x 10-3 M?
This is the pOH of a 0.25M of H3PO4
What is 13.4?
A given weak acid has a Ka of 1.77 x 10-4. To decrease the buffer pH, you would do this to your acid/conjugate base ratio.
What is increase the amount of acid in the ratio.
The lab procedure of determining the concentration of a substance by using another substance of a known concentration.
What is titration?
H2SO4 is a polyprotic acid. Explain why the first ionization has a higher Ka than the second ionization.
Common ion effect - first ionization produced H3O+ in solution which reduces the second ionization (Le Chatelier's Principle)