BM Review Acid Base Equilibrium Home Work April 14 through 15
1.
Answer Choice -----------D--------------2.
Based on the values of the dissociation constants for H3PO4 are given in the table above.
Given that the solution in the beaker at the end of step 2 had a pH of approximately 1,
which of the following chemical species had the lowest concentration among the products
of step 2?
Answer Choice ---------C-----------------
3.
Hint : Write out both net ionic reactions between weak Acid + Base
Answer Choice --------C-----------------4.
Hint: Pick the buffer species that HCl (strong acid) will react with and write out net ionic
Answer Choice ---------C-----------------
5.
Hint : Remember Group 1 ions are always spectator
Answer Choice ----------C---------------6.
Hint : \NaOH provides OH- ions ( Na+ is spectator)
Answer Choice -----------C---------------
7.
Hint : PH is not changing BUFFER so pick the species that HCl( strong will react with)
Answer Choice --------D-----------------For 8 & 9
Answer Choice --------c------------------
9.
Hint : pH =Pka @ HE
Answer Choice -------B------------------10.
Hint : Change pH to Molarity and MiVi=M2V2
Answer Choice ----------C----------------
11.
Hint: Think about who is stronger to push the Equilibrium
Answer Choice ---------A----------------12
Hint : HCl & NaOH strong net ionic please
Answer Choice -------------------------13.
Hint: We choose according to pka values
Answer Choice --------------------------
14.
Hint: Net ionic equations in each case
Answer Choice -------------------------15.
Hint Kw= [H3O+] [OH-]
In water the two concentrations are equal
Answer Choice -------------------------16.
No Hint
Answer Choice -------------------------17.
No Hint
Answer Choice -------------------------18.
Hint : Dissociation of water is Endothermic Kw inc with inc in Temp
Answer Choice --------------------------