e. A solution that is 0.255 M in CH3NH2 and 0.135 M in CH3NH2Br (dissociates to...
A chemistry graduate student is given 125. mL of a 0.30 M methylamine (CH3NH2) solution. Methylamine is a weak base with K= 4.4 x 10 . What mass of CH3NH2Cl should the student dissolve in the CH3NH, solution to turn it into a buffer with pH = 10.30? You may assume that the volume of the solution doesn't change when the CH NH2Cl is dissolved in it. Be sure your answer has a unit symbol, and round it to 2...
A 110.0 −mL buffer solution is 0.110 M in NH3 and 0.135 M in NH4Br. Part A: What mass of HCl can this buffer neutralize before the pH falls below 9.00? Correct Answer: 8.51x10-2 g Part B: If the same volume of the buffer were 0.255 M in NH3 and 0.395 M in NH4Br, what mass of HCl could be handled before the pH falls below 9.00? Express the mass in grams to three significant figures. Please help with Part B!...
Methylamine, CH3NH2, is a weak base and was featured in the TV show Breaking Bad. A 0.504 M solution of methylamine has equilibrium concentrations of both CH3NH,* and OH' equal to 0.0150 M. What is the Kb of the base? CH3NH2 (aq) + H20 (1) = CH3NH3* (aq) + OH (aq)
a solution that is 0.170 M in HC2H3O2 and 0.110 M in KC2H3O2 what is the pH? a solution that is 0.250 M in CH3NH2 and 0.135 M in CH3NH3Br what is the pH?
What is the pH of a 0.200 M CH3NH2 solution? (Kb for CH3NH2 = 4.4 x 10-4) 2.03 11.97 9.33 8.79
What is the pOH of a solution of 0.125 M CH3NH2 and 0.130M CH3NH3CI CH3NH2 +H20 > CH3NH3Cl +OH Kb = 4.4 *10^-4
Determine the pH of a 0.85 M CH3NH2 solution
What is the pH of a solution of 0.400 M CH3NH2 containing 0.180 M CH3NH31? (Kb of CH3NH2 is 4.4 x 10-4)
Solve for pH using henderson hasselbach equation a. a solution that is 0.195 M in HC2H3O2 and 0.110 M in KC2H3O2 b. a solution that is 0.255 M in CH3NH2 and 0.130 M in CH3NH3Br express using two decimal places
What is the pH of a 0.255 M aqueous solution of sodium hypochlorite, NaClO? (Ka for HClO = 3.5×10-8)