Chemistry If you prepare a 500 mL phosphate buffer solution using 3.00g Disodium Phosphate Dihydrate (177.99 g/mol), 2.00g Sodium Phosphate Monobasic Monohydrate (137.99 g/mol), & Water, what is the pH of the final solution if the pKas of phosphoric acid are 2.15, 6.86, & 12.32?

A buffer solution is prepared which is 0.140 M both in lactic acid (CH3CHOHCO₂H) and in sodium lactate (CH3CHOHCO₂Na). 1.38×10-4 for lactic acid. Ka What is the pH of this solution? = 3.860 You are correct. Your receipt no. is 153-562 When 1.94 mL of 0.120 M HCI is added to 11.0 mL of this buffer solution, what is resulting change in pH? 0.11 Previous Tries Submit Answer Incorrect. Tries 33/99 Previous Tries This discussion is closed.

A buffer is made by combining 20.0 ml. 0.250 M NHACl with 30.0 mL 0.250 M NH3. A) Calculate the pH of the buffer after 1.00 mL of 6.00 M HCI is added and equilibrium is re-established. B) Calculate the pH of the buffer after 1.00 mL of 6.00 M NaOH is added and equilibrium is re-established. Please help with both parts

You need to prepare an acetate buffer of pH 5.455.45 from a 0.843 M0.843 M acetic acid solution and a 2.06 M KOH2.06 M KOH solution. If you have 630 mL630 mL of the acetic acid solution, how many milliliters of the KOHKOH solution do you need to add to make a buffer of pH 5.455.45? The p?apKa of acetic acid is 4.76.4.76. Be sure to use appropriate significant figures.   mL

Please dont give hand written solution

please don't provide handwritten solution..

An analytical chemist is titrating 195.5mL of a 0.1800M solution of dimethylamine CH32NH with a 0.4000M solution of HNO3 . The pKb of dimethylamine is 3.27 . Calculate the pH of the base solution after the chemist has added 12.5mL of the HNO3 solution to it.   Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO3 solution added.   Round your answer to 2 decimal places.

An analytical chemist is titrating 191.4 mL of a 0.4200M solution of benzoic acid (HC,H5CO,) with a 0.6200M solution of NaOH. The p K, of benzoic acid is 4.20. Calculate the pH of the acid solution after the chemist has added 139.7 mL of the NaOH solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of NaOH solution added. Round your answer to 2 decimal places. pH = U

Cacodylic acid (dimethylarsinic acid, HASO2(CH3)2) is a common buffer used in biology to prepare and fix biological samples. The pKa of cacodylic acid is 6.3. Part A What is the pH of a buffer solution prepared by mixing 20.0 mL of 0.0600 mol L-1 NaOH with 20.0 mL of 0.105 mol L -1 cacodylic acid? Express your answer using one decimal place. pH = 6.4 Submit Previous Answers Correct Part B What is the pH of the buffer solution in part A after 0.0002 moles of H3 o+ was added to the mixture? Express your answer using one decimal place. pH =

A buffer solution is made up of 1.0 M NH3 and 1.0 M NH4CI. K₂NH3 - = 1.8 x 10-5 What is the pH when 20 mL of 0.60 M NaOH is added to 25. mL of the buffer? pH after base added [?] pH Enter