Question

In: Chemistry

What are the clear differences in reduction of [Co(NH3)5MoO4] + and [Co(NH3)5CrO4] + by L-ascorbic acid?...

What are the clear differences in reduction of [Co(NH3)5MoO4] + and [Co(NH3)5CrO4] + by L-ascorbic acid? Would you expect L-ascorbic acid to reduce the Co(III), Cr(VI), and Mo(VI) metal centers when you discuss this interesting chemistry?

Solutions

Expert Solution


Related Solutions

Consider a the titration of 0.685 L of 0.773 M ascorbic acid (H2C6H6O6) with 1.76 M...
Consider a the titration of 0.685 L of 0.773 M ascorbic acid (H2C6H6O6) with 1.76 M NaOH. What is the pH at the second equivalence point of the titration?
Ascorbic acid or Vitamin C, H2C6H6O6, is a weak diprotic acid. What are the concentrations of...
Ascorbic acid or Vitamin C, H2C6H6O6, is a weak diprotic acid. What are the concentrations of H+, H2C6H6O6, HC6H6O6- and C6H6O62- in a 0.10 M aqueous solution of ascorbic acid? For ascorbic acid Ka1=7.9x10-5 and Ka2= 1.6x10-12.
12. Consider the titration of 0.100 L of 0.200 M ascorbic acid with 0.500 M NaOH....
12. Consider the titration of 0.100 L of 0.200 M ascorbic acid with 0.500 M NaOH. What is the pH at the endpoint of the titration? Enter your answer to two decimal places; for this question we can assume the 5% assumption is valid.
The rate of reduction of [Co(NH3)5(OH2)]3 by Cr(II) is seven orders of magnitude slower than reduction...
The rate of reduction of [Co(NH3)5(OH2)]3 by Cr(II) is seven orders of magnitude slower than reduction of its conjugate base, [Co(NH3)5(OH)]2, by Cr(II). For the corresponding reductions with [Ru(NH3)6]2, the two differ by less than a factor of 10. What do these observations suggest about their mechanisms?
The rate of reduction of [Co(OH2)(NH3)5] 3+ by Cr2+ is 7 orders of magnitude slower  than the...
The rate of reduction of [Co(OH2)(NH3)5] 3+ by Cr2+ is 7 orders of magnitude slower  than the reduction of [Co(OH)(NH3)5] 2+ by Cr2+.  For the corresponding reduction with [Ru(NH3)6] 3+, the two differ by less than a factor of 10. What do these observations suggest about the mechanism?
Ascorbic acid (vitamin C, C6H8O6) is a water-soluble vitamin. A solution containing 81.0 g of ascorbic...
Ascorbic acid (vitamin C, C6H8O6) is a water-soluble vitamin. A solution containing 81.0 g of ascorbic acid dissolved in 220 g of water has a density of 1.22 g/mL at 55 ∘C. Calculate the mass percentage. Calculate the mole fraction. Calculate the molality. Calculate the molarity of ascorbic acid in this solution.
how does the Ascorbic Acid Method (SPR) work?
how does the Ascorbic Acid Method (SPR) work?
A 0.1219 g sample of a Vitamin C (ascorbic acid) tablet was dissolved in acid. A...
A 0.1219 g sample of a Vitamin C (ascorbic acid) tablet was dissolved in acid. A 25.00 mL aliquot of 0.01739 M KIO3 was added along with excess KI. The resulting solution was titrated with 0.07211 M thiosulfate, requiring 21.44 mL to reach the endpoint. Compute the weight percent of ascorbic acid (FW = 176.12) in the tablet.
A 0.250 m ascorbic acid solution is 1.79% ionized at 25 degrees. what is the pka...
A 0.250 m ascorbic acid solution is 1.79% ionized at 25 degrees. what is the pka for the ascorbic acid at this temp??
You are titrating 25 mL of 0.25 M Ascorbic Acid solution ith 0.15 M NaOH. Ascorbic...
You are titrating 25 mL of 0.25 M Ascorbic Acid solution ith 0.15 M NaOH. Ascorbic Acid is an organic diprotic acid, H2A, that is found in many natural materials. Ka1 = 7.94 x 10^-5 and Ka2 = 1.62 x 10^-12. What is the a) initial pH, b) at the 1st equivalence point, c) the 2nd equivalence point, and d) after 27.5 mL of NaOH have been added?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT