Identify the conjugate acid-base pairs in each of the following equations:
1) HF(aq)+CO32?(aq)?F?(aq)+HCO3?(aq)
Check all that apply.
a) F?/HCO3?
b) HF/F?
c) HF/CO32?
d) HCO3?/CO32?
2) HCl(aq)+OH?(aq)?Cl?(aq)+H2O(l)
a) HCl/OH?
b) HCl/Cl?
c) H2O/OH?
d) H2O/Cl?
Conjugate acid base :
Lets first look at conjugate acid
The base when gets proton is becomes conjugate acid
Conjugate base:
When acid give its proton and forms species that is called as conjugate base.
Q. 1st
In this question, HF is an acid which gives its proton and form F-
So F- is conjugate base of HF
CO3-2 is base which takes proton from HF and forms HCO3- so HCO3- is conjugate acid of CO3-2
So the answer for this question is
d : d) HCO3−/CO32−
Q. 2nd
HCl(aq)+OH−(aq)→Cl−(aq)+H2O(l)
Here HCl is acid and its conjugate base is Cl-
OH- is base and its conjugate acid is H2O
So the answer is
d) H2O/Cl−
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