A chemistry graduate student is given 250. mL of a 1.40 M

Last updated: 7/31/2022

A chemistry graduate student is given 250. mL of a 1.40 M methylamine (CH, NH₂) solution. Methylamine is a weak base with K =4.4 x 104. What mass of CH3NH₂Br should the student dissolve in the CH3NH₂ solution to turn it into a buffer with pH = 10.38 ? You may assume that the volume of the solution doesn't change when the CH3NH, Br is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.