QUESTION 20
A solution is said to be 45 % HCl by mass. What does this mean?
O
45 g HCI/L solution
O 45 mol HCI/L solution
O 45 g HCI/ 100 g solution
100 g HCI/45 g solution
O 45 g HCI

In which reaction is precipitation occurring?

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.

Determine the ph of 0.10 m nh3 solution. nh3 is a weak base with a kb equal to 1.8 x 10-5 round answer to nearest whole number.