Quiz 14.2:

3) Why is F3COH a strong acid,  compared to the other options for that question?

4) What is an oxide ion? Is it stronger than OH^-?

Quiz 14.3

Hi Uma, i just did quiz 14.3 and I have trouble with questions 4,9 and 10. I am not able to copy and paste the questions and don't want to waste time typing them all out. Can you please retrieve these questions and help me understand them?

sorry Gurpreetkh
I just saw your question
I will take out all your wrong questions and will answer them here
Why is F3COH a strong acid??
Three F(most electyronegative ) atoms on the carboxylic carbon will make that carbon strongly electron deficient
and this will facilitate release of H as H+ and hence make it very strong acid
O2- and OH-
if you compare the strength of O2- and OH- make their conjugate acids - so O2- ---> OH-
                                                                                                            OH- -----> H2O
H2O is stronger conjugate acid then OH-
Hence OH- is a weaker base then O2-
or you can just compare the charges here , the one which has more negative charge has more tendency to give electrons and is more basic.