A laboratory manager wants to prepare 1000.0 mL of a buffer with a pH of 4.696 from equimolar solutions of CH3CH2CH2CO2H (Ka = 1.500e-5) and LiCH3CH2CH2CO2. What volume of the LiCH3CH2CH2CO2 solution would be required?

A buffer solution is made from 0.031 M Na2HPO4  and 0.069 NaH2PO4 . What is the pH of that solution after the addition of 1mL of 15M HCl? pKa is 6.86.

What is the pH of a buffer that is 120 M in formic acid, HCHO2 and 0.080 M in potassium formate KCHO2? Ka(HCHO2) = 1.8 x 10-4 33 57 74 91

How many grams of CH3CH2CO2 Na should be added to 1.50L of a 0.250M CH3CH2CO2H solution to obtain a buffer with a pH of 5.0? CH3CH2CO2H, Ka=1.34 x 10^-5

What is the pH of a 500 mL solution that is 0.40 M H2PO4-  and 0.20 M HPO42-? pKa values for H3PO4 are 2.14, 7.20, and 12.14. What will be the new pH if 0.02 mole of KOH is added to the above buffer?

-3 A chemistry graduate student is given 450. mL of a 1.10M diethylamine ((C₂H), NH) solution. Diethylamine is a weak base with K₂ = 1.3 × 10¯ What mass of (C₂H₂)2NH₂Cl should the student dissolve in the (C₂H5) NH solution to turn it into a buffer with pH = 11.25? You may assume that the volume of the solution doesn't change when the (C₂H5) NH₂Cl is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. 0 Explanation 85°F Mostly sunny Check $ D x10 X C % S E F6 Q Search. F7 & L FB a * F9 F10 Ⓒ2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessi *- F11 *+ F12 PrtSc Insert Delete 4)

A) You want to make 75 mL of a 0.050 M HA buffer with a pH of 5.75 using 1 M HA and and 1 M NaOH. What volume (in mL) of HA is required to make the buffer? The pKa of HA is 5.75. B) You want to make 100 mL of a 0.20 M HA buffer with a pH of 6.00 using 1 M HA and and 1 M NaOH. What volume (in mL) of NaOH is required to make the buffer? The pKa of HA is 5.75.

What is the silver ion concentration for a saturated solution of Ag2CO3 if the Ksp for Ag2CO3 is 8.4x10-12?

What is the pH of a buffer made from 0.580 mol of CH3NH2 (Kb = 4.4 x 10-4) and 0.260 mol of CH3NH31?

which of the following acids (listed with pKa values) and their conjugate base would form a buffer with a pH of 8.10? (see image)