What is the pka of x-281

Assignment Help Chemistry
Reference no: EM13688620

Problem- A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoprotic weak acid, but because of security concerns, the actual chemical formula must remain top secret.

The company is interested in the drug's Ka value because only the dissociated form of the chemical is active in preventing cholesterol buildup in arteries.

To find the pKa of X-281, you prepare a 0.085M test solution of X-281. The pH of the solution is determined to be 3.00. What is the pKa of X-281?

Any help is greatly appreciated, working it out this problem

Reference no: EM13688620

Questions Cloud

Calculate the ph of a solution that is 0.295 m in sodium : Problem- Calculate the pH of a solution that is 0.295 M in sodium formate (NaHCO2) and 0.205M in (HCO2H)- The Kb of formatic acid is 1.77x10^-4.
Explain the correct statement from the multiple choices : Problem- Using your understanding of conjugate acids and bases pick the correct statement from the multiple choices
Explain extracted the original solution with naoh : Problem- A student accidentally extracted the original solution with NaOH (aq) and the NaHCO3 (aq). When he acidified the NaHCO3 extract, no crystals formed.
Find the ph during the titration of 20.00ml : Problem- Find the pH during the titration of 20.00mL of 0.1000M triethylmine, Kb=5.2x10^-4, with 0.1000M HCl solution after the addition of 20.10mL of titrant and 30.00mL of titrant?
What is the pka of x-281 : To find the pKa of X-281, you prepare a 0.085M test solution of X-281. The pH of the solution is determined to be 3.00. What is the pKa of X-281
What is the ph of blood plasma : Problem- Blood is buffered by carbonic acid and the bicarbonate ion. Normal blood plasma is 0.024 M in HCO3- and 0.0012 M H2CO3 (pKa1 for H2CO3 at body temperature is 6.1). 1) What is the pH of blood plasma?
What is the ph at 0.50ml before the equivalence point : Problem- A 35.00mL solution of .2500 M HF is titrated with a standardized .1627 M solution of NaOH at 25 degrees C. 1) What is the pH at 0.50mL before the equivalence point
Equilibrium the total pressure in the container : Problem- A 0.831-g sample of SO3 is placed in a 1.00 L container and heated to 1100 K. The SO3 decomposes to SO2 and O2: 2SO3 (g) 2SO2 (g) + O2 (g). At equilibrium the total pressure in the container is 1.300 atm.
What is the equilibrium constant for fe3+ : Problem- If the calibration curve is y=41950x + 0.0212, r^2 = 0.9992 and you measure the absorbance of FeSCN^2+ to be 1.00, 1) What is the equilibrium constant for Fe3+, using an I.C.E table if the initial [Fe3+] = 5*10^-4 M

Reviews

Write a Review

Chemistry Questions & Answers

  Explain the integrals are given in arbitrary units

Give the structure that corresponds to the following molecular formula and 1H NMR spectrum: C7H12Cl2: ? 1.07 (integral = 6203, s); ? 2.28 (integral = 1402, d, J = 6 Hz); ? 5.77 (integral = 700, t, J = 6 Hz). Note: The integrals are given in arbitr..

  Define the vapor pressure of pure ethanol

The vapor pressure of pure ethanol is 56 torr. if a solution prepared from 560.0 g of methanol and 210.0 g of ethanol has a vapor pressure of .31 atm over the soultion.

  Hydrogen peroxide decomposes to water and oxygen

Hydrogen peroxide decomposes to water and oxygen, and the activation energy for this process is 42 kJ/mol. The hydrogen peroxide formed in the biological process is harmful to tissue

  Identify the compound from its spectra

A bottle is labeled only "Compound B (C6H12)" and contains a colorless liquid. You have been called in as an expert to identify this compound from its spectra

  Explain the atomic mass of the element is based upon

An element occurs as a mixture of isotopes. The atomic mass of the element is based upon

  Understanding of chemistry basics1 boltzmanns critics

understanding of chemistry basics.1. boltzmanns critics claimed his work was unscientific because he.a. presented his

  What is the concentration of ba2+ in the new solution

When 24 mL of a 175 mL stock solution containing 1.6 M BaF2 is diluted to 70 mL, what is the concentration of Ba2+ in the new solution?

  Explain what fraction of sodium-24 remains after 50 hours

Sodium-24, a beta-emitter used in diagnosing circulation problems, has a half-life of 15 hours. A. Write the balanced nuclear equation for this emission. B. What fraction of sodium-24 remains after 50 hours

  Explain what is the rate of formation of aluminum

The electrolysis of molten A12O3 at 980 ºC is used to produce metallic aluminum. A current of 658 A is used in the electrolysis cell. What is the rate of formation of aluminum, in kilograms per hour

  An iron meteorite was analyzed for isotopic argon content

question an iron meteorite was analyzed for isotopic argon content. the amount of 36ar was 0.200mm3 stpper kg of

  Explain the f-18 produced is to make it to the hospital

PET studies require fluorine-18, which is produced in a cyclotron and decays with a half-life of 1.83 hours. Assuming that the F-18 can be transported at 60.0 miles/hour, how close must the hospital be to the cyclotron if 65% of the F-18 produced ..

  Explain what is the ph of a solution of 0.450 m kh2po4

What is the pH of a solution of 0.700 M K2HO4, potassium hydrogen phosphate? b)What is the pH of a solution of 0.450 M KH2PO4, potassium dihydrogen phosphate

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd