What is the chemical formula for the compound formed between sodium and flour one

Ineed with my science work! it’s due tomorrow!

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.

+= + + balance the equation on coefficients, ex. 1,1,1