What does a solution that DOES NOT buffer against either an acid or base contain?

Question

ex:

an unknown solution that buffers against acids contains a OH group
an unknown solution that buffers against bases contains a H group


what does a solution that DOES NOT buffer against either acid or base contain?

Answer 1

Salts of strong acids and bases. Such solutions are neutral, and adding acids or bases to them will change their pH dramatically.

Answer 2

so, any time you have questions like this, initiate thinking Henderson-Hasselbalch: the equation varieties: pH = pKa + log([A-]/[HA}) or pH = pKa - log ([HA]/[A-]) Now, that is log base ten, so actually, the value of the logarithm is what capability do you would be able to desire to develop the variety ten to get the value interior the parentheses. for section a, considering the fact that HA and A- are at equivalent concentrations, the log is of a million. log of a million is comparable to 0. subsequently, your pH would desire to be the pKa. to that end, 6.5 for section b, the value of [A-]/[HA] works out to be 10, so log of that would paintings out to be a million. subsequently, pH = pKa +a million or 7.5 for section C, [A-]/[HA] works out to be .a million, so log of which would be -a million, so pH is pKa + (-a million) so, 5.5 section d is working backwards. pH = 4.5, which capability log([A-]/[HA]) would desire to equivalent -2. So what's 10^(-2)? .001 optimistically you are able to decide something from right here.