Maleic acid is a weak diprotic acid with : pKa1 = 1.87 pKa2 = 6.07
A 10.00 mL solution of 0.1000 M maleic acid is titrated with 0.1000 M NaOH.
Calculate the pH of the solution at the first equivalence point.
Maleic acid is a weak diprotic acid with : pKa1 = 1.87 pKa2 = 6.07 A...
Titration of a diprotic acid with a strong base You have a 10.0 mL solution containing 0.5 M carbonic acid. Carbonic acid is diprotic, with pKa1 = 6.35 and pKa2 = 10.33. You titrate this solution using 1.00 M NaOH . (a) Calculate the pH of the solution before adding any NaOH. (b) Calculate the amount of NaOH needed to reach the first midpoint. What is the pH? (c) Calculate the amount of NaOH needed to reach the first equivalence...
6. Oxalic acid H2C2O4 is a diprotic acid and can be used, in dilute form, as wood bleach. pKa1 = 1.237 and pKa2=4.187 A. How many milliliters of 0.0500 M NaOH would be required to completely neutralize 10.0 mL of 0.100 M H2C2O4? (5 pts) B. Estimate the pH at the first equivalence point of the titration. (6 pts) C. What is the pH at the second equivalence point of the titration. (8 pts) Please help with work shown, especially...
A diprotic acid has the following equilibrium constants Pka1- 2.160, pka2- 4.30 a. Calculate the pH of a solution of 0.750 M KHA ii. Calculate the fraction of dissociation (in percent) of species in (i)
work check and help with the last question. pka2 is more accurate than pka1. 58 5. Calculation of molar mass: Use class-average NaOH molarity and your part B data. (Be sure this calculation is consistent with your choice reported in #1 and 2 above.) 6. Complete the following table, having consulted a table of diprotic acids; taking into account molar mass and pKa's, identify your unknown: I Molar mass pKa1 pKa2 From titration data Data from reference | 6-1 Unknown:...
Part E A diprotic acid has a pKa1 -2.80 and pka2 6.50. What is the pH of a 0.10 M solution of this acid that has been one quarter neutralized? 97 ΑΣΦ Submit Request Answer Part E A diprotic acid has a pKa1 -2.80 and pka2 6.50. What is the pH of a 0.10 M solution of this acid that has been one quarter neutralized? 97 ΑΣΦ Submit Request Answer
The diacid compound H2A of concentration 0.100 M and volume 50.00 mL (pKa1 = 4, pKa2 = 7) was titrated with NaOH 0.500 M. Write the two titration reactions, and calculate the two equivalence volumes Write the three acid / base equilibrium reactions for H2A Calculate the pH at the following added NaOH volumes: 0, 5,10,13, 20, 25 mL
According to your pKA1 and pKA2 values, at which pH ranges would maleic acid be usable as a buffer? Could maleic acid be used as a buffer at physiological pH? Explain.
How to calculate the moles of diprotic acid H2X to reach the first and second equivalence points? Then used the moles of the diprotic acid to calculate the moles in the origional 100.0 Ml of solution. remmeber that you titrated 25.0 mL of the solution. information given: 4.9 mL of NaOH required to reach first equivalence point 9.9 mL of NaOH reuired to reach second equivalence pont 5.0421*10-4 moles of NaOH required to reach first equivalence point 1.01871*10-3 moles of...
Malonic acid [ molecular formula C3H4O4] is a diprotic acid with pKa1 = 2.83 and pKa2 = 5.69 . Determine the concentrations of the neutral acid, the monoanion and the dianion [H2A, HA- and A2-] in a solution contaning 50.0 mg of malonic acid in 1.00 liter of solution.
In a titration, 25 mL of 0.10 M weak diprotic acid solution was titrated by 0.10 M sodium hydroxide, NaOH, and produced a titration curve listed below. (20 points total) 14,0 3. 12.0 10.0 8.0 pH 6.0 4.0 2.0 10.0 5.0 20.0 30.0 15.0 25.0 Volume of 0.100 M NaOH, mL The acid used in above titration is a weak diprotic acid. Briefly explain how you know it's diprotic from looking at the titration curve and how you know a...