Nitrogen gas was collected by water displacement. What was the pressure of the N2 collected if the temperature was 50 °C? O 112.3 kPa
O 62.3 kPa
O 87.7 kPa
O 100 kPa
Help

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.