The weak base TRIS (tris(hydroxymethyl)aminomethane right (MM = 121.14 g/mol and pKb = 5.7) is often used to prepare buffers with its conjugate acid TRIS-HCl (MM = 157.60 g/mol). (i) What mass (g) of each compound, TRIS and TRIS-HCl, is required to prepare 500.00 mL of a TRIS buffer at pH 7.00 that will have a total concentration of 50.0 mM?

(ii) What will be the pH of this TRIS buffer if you dilute it by a factor of 10? Justify your answer