Write a balanced chemical equation that shows the formation of 2-methylpropanoic acid from the elements carbon (C), hydrogen (H2 ) and oxygen (O2 ). (Use the smallest integer coefficients possible and do not include states. Enter the elements in the order: C, H, then O in the product box.)

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.