The introduction of a catalyst into a reaction mixture would
1. change ∆S of the reaction.
2. change the value of the equilibrium constant.
3. change ∆G of the reaction.
4. cause none of these changes.
5. change ∆H of the reation

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.