6. Find the pH of a 1.00-L aqueous solution prepared with 14.23 g of tris (FM 121.00) plus 5.67 g of tris hydrochloride (FM158.00). (pKa = 8.072)
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- Iron(III) hydroxide (MM = 106.87 g/mol) has a Ksp of 6.3 x10-38. If 35.9 g Fe(OH)3 is stirred into 6,034.63 L H2O, how many micrograms of iron(III) hydroxide will dissolve?Report your answer to the nearest whole number.A 190.00 mL solution of 0.00300 M AB4 is added to a 340.00 mL solution of 0.00265 M CD5. What is pQsp for AD4? Answer: (11.251)Ajja what is the ph of a 0.10m solution of an acid with a pKa of 8.4?
- Trial 1: Initial pH= 3.92mL Mass of KHP and Paper= 0.868g Mass of paper= 0.357g Mass of KHP= 0.511g Trial 2: Initial pH= 4.09ml Mass of KHP and Paper= 0.870g Mass of paper= 0.359g Mass of KHP= 0.511g 1) find Ka and use the value of Ka to calculate the initial pH of each trial 2) calculate Kb for the C8H4O4^-2 anion from the value of Ka that you obtained for KHP.Calculate Qsp for calcium fluoride (Ksp = 3.9 ×10–11) when 180.0 mL of a 6.05×10-3 M solution of Ca(NO3)2 is added to 260.0 mL of a 7.65×10-3 Msolution of KF.Calculate Qsp for calcium fluoride (Ksp = 3.9 ×10–11) when 180.0 mL of a 7.95×10-3 M solution of Ca(NO3)2 is added to 310.0 mL of a 6.90×10-3 M solution of KF.
- From the initial concentration of the acid and the measured ph, calculate Ka and pKa for the unknown acid. Also find the percent error 0.050 M unknown acid pH= 4:34 pKa(actual) = 6.74In the spectrofluorometric analysis of quinine, which of the following statements/phrases can be considered a factor level? A. concentration of 2ppm of iodide B. concentration of quenchers C. use of quenchers D. use of iodideI would need help with these questions step by step: Calculate the isoelectric and isoionic pH of 0.010 M threonine? pK1 = 2.15, pK2 = 9.12 Find the pH of a 1.00 L aqueous solution containing 12.43 g of tris (FM 121.14) plus 4.67 g of tris hydrochloride ( FM 157.60) ? What would be the new pH after adding 12.0 mL of 1.00 M NaOH to this buffer?
- kb = 1.8 x 10-5 What is pkb, pka, and ka when kb is givenThe base B has pKb 4.00. Find the fraction in the form B and the fraction in the form BH at pH (a) 9.00; (b) 10.00; (c) 10.30.1) Titrant 5 mg H2O/ mL Resolution 2.5 µg H2O/step Detection limit is 125 µg H2O for a 5 g sample (= 25 ppm) 2) Titrant 2 mg H2O/ mL Resolution 1 µg H2O/step Detection limit is 50 µg H2O for a 5 g sample (= 10 ppm) You have a 10 g sample which is expected to contain 200 µg H2O. True or false? 1. Titrant 5mg/mL is the preferred system over 2. Titrant 2mg/mL for this sample. True False