2-In order to prepare a buffer with pH = 10.00, what ratio of [A-]/[HA) is needed for an acid (HA) whose pka is 10.32? *
Posted: Wed Apr 27, 2022 6:55 am
- 2 In Order To Prepare A Buffer With Ph 10 00 What Ratio Of A Ha Is Needed For An Acid Ha Whose Pka Is 10 32 1 (51.9 KiB) Viewed 38 times
- 2 In Order To Prepare A Buffer With Ph 10 00 What Ratio Of A Ha Is Needed For An Acid Ha Whose Pka Is 10 32 2 (61.39 KiB) Viewed 38 times
- 2 In Order To Prepare A Buffer With Ph 10 00 What Ratio Of A Ha Is Needed For An Acid Ha Whose Pka Is 10 32 3 (37.11 KiB) Viewed 38 times
- 2 In Order To Prepare A Buffer With Ph 10 00 What Ratio Of A Ha Is Needed For An Acid Ha Whose Pka Is 10 32 4 (38.49 KiB) Viewed 38 times
= 17- A buffer consists of 0.22 M KHCO3 and 0.37 M K2CO3. Carbonic acid is diprotic acid with (Ka1 = 4.X 10-7, Ka2 = 4.7 x 10-11) (a) Which Ka value is more important to this buffer? * = ОВ. Ka2 O C. Ka3 O D. Ka4 O A. Kai
36. The amount of CaCO3 per antacid tablet was determined by dissolving a sample of antacid (0.145 g) in 10.00 mL HCI 0.500 M followed by back titration with 15.0 mL of standardized solution of NaOH with a concentration of 0.250 M. calculate the theoretical ANC in mmoles/tablet. the whole tablet antacid weighed 1.4000 gt. Mw CaCO3 100.0869 g/mol A. 27.975 O B. 13.988 O C.6.993 D. 3.75
44- Determine the pH during the titration of 38.1 ml of 0.379 M trimethylamine (CH3)3N. (Kb = 6.3x10-5) by 0.379 M HBr at the following points. (e) After adding 55.6 ml of HBO O A. (e)=0 26 )= B. (e)= 1.15 C. (e)-6.74 D.none of the above Other