An aqueous solution contains 0.372 M ammonia (NH3). How many mL of 0.208 M perchloric acid would have to be added to 125 mL of this solution in order to prepare a buffer with a pH of 9.530. mL

Read the given expression. x = number of protons − number of core electrons which of the following explains the identity of x and its trends across a period? x is the effective nuclear charge, and it remains constant across a period. x is the screening constant, and it remains constant across a period. x is the effective nuclear charge, and it increases across a period. x is the screening constant, and it increases across a period.

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.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?