Explain what is the ka for paba

Assignment Help Chemistry
Reference no: EM13671522

Para-amino benzoic acid, PABA, HC7H6NO2 is used in some sunscreen agents. A solution is made by dissolving .263 mol of PABA in enough water to make 750mL of solution. The solution has [H+]=2.6E-3 M. Explain what is the Ka for PABA?

Reference no: EM13671522

Questions Cloud

Explain the mole fraction of benzene in vapor equilibrium : At 20oC, the vapor pressure of toluene is 22 millimeters of mercury as well as that of benzene is 75 millimeters of mercury. An ideal solution, equimolar in toluene and benzene, isprepared. At 20oC, explain what is the mole fraction of benzene in ..
The decomposition of sulfuryl chloride is a first orded : The decomposition of sulfuryl chloride is a first orded. The rate constant for the decomposition at 660 K is 4.5 X10-2 s-1. A. If we start with an initial SO2Cl2 pressure of 330 torr, Explain what is the pressure of this substance after 73 s
Define the unusual relative reactivity of 3-chloroprop-1-ene : Define the unusual relative reactivity of 3-chloroprop-1-ene (allyl chloride) in view of the fact that it is a primary chloride. And Compare and define the difference in the reactivity of chlorobenzene and of an alkyl halide, when hydrolysis is at..
Explain hypertonic solution will shrink in volume : A red blood cell in a hypertonic solution will shrink in volume as it undergoes crenation. In a hypotonic solution, a red blood cell will swell and possibly burst as it undergoes hemolysis.
Explain what is the ka for paba : Para-amino benzoic acid, PABA, HC7H6NO2 is used in some sunscreen agents. A solution is made by dissolving .263 mol of PABA in enough water to make 750mL of solution. The solution has [H+]=2.6E-3 M. Explain what is the Ka for PABA
Explain what is the concentration of naoh in final solution : 4.75 grams of NaOH are added to 25.0 ml of water in a volumetric flask. 10.0 ml of resulting solution are removed as well as diluted to a final volume of 100.0 ml. Explain what is the concentration of NaOH in the final solution
State the equations showing the reactions of these ions : State the equations showing the reactions of these ions with water, and identify the bronsted acid and base in each case. Which of the two is the stronger base
Explain how to draw the structural formula of an aldehyde : Explain how to draw the structural formula of an aldehyde as well as a ketone with the molecular formula C3H6O
Define cardiac cycle commences that is electrical excitation : From the point at which the cardiac cycle commences that is the electrical excitation is initiated in the S.A node arrange the subsequent events in the correct sequence.

Reviews

Write a Review

Chemistry Questions & Answers

  State what is the percent purity of nahco

What is the percent purity of NaHCO3 in your baking soda? (The formula weight of NaHCO3 is 84.007 g/mole).

  Explain the central atom in a molecule of cl2o

Which choice correctly describes the electron pairs in the valence shell of the central atom in a molecule of Cl2O?

  What about uv radiation affects ozone

What does ozone do that oxygen (or any other molecule) do? How? Ozone is created in what is believed to be a two-step process. It is destroyed naturally in one of two pathways. What are those reactions? On Your Own: What is the role of UV in the d..

  What is the molecular formula of the gas in this sample

A 1.17 g sample of an alkane hydrocarbon gas occupies a volume of 674 mL at 28°C and 741 mmHg. Alkanes are known to have the general formula CnH2n+2.

  Explain what volume must it be compressed to increase

The pressure of gas in a 600.0 ml cylinder is 65.0 mmHg. what volume must it be compressed to increase the pressure to 385mmHg

  Explain the hydrogen atom are orthogonal

Show by explicit integration that the 1s and 3s wave functions of the hydrogen atom are orthogonal. Note that in integrals over r

  Explain what mass of helium is in the blimp

The Goodyear blimps, which frequently fly over sporting events, hold approximately 1.60×105 ft^3 of helium. If the gas is at 25deg C and 1.0 atm, what mass of helium is in the blimp

  What would be the change in pressure the formation of n2 gas

What would be the change in pressure in a sealed 10.0 L vessel due to the formation of N2 gas when 32.0 g of NH4NO2 decomposes at 25 degrees C

  Construct a lewis structure for hydrogen peroxideh2o2 in

construct a lewis structure for hydrogen peroxideh2o2 in which each atom achieves an octet of electrons.do you expect

  How to calculate the percent ionized in phenol

Phenol (C6H5OH, also called carbolic acid) has a pKa of 9.89. It is used to preserve body tissues and is quite toxic. Calculate the percent ionized in 0.0503 M phenol--a dilute solution.

  Evaluate the energy of a photon of that radio wave

calculate the energy of a photon of that radio wave. If you then hit the surface of a metal that has an ionization potential of 2.1 x 10-26 J, would you have enough energy to kick off an electron from the surface. If yes, what would be the velocit..

  Define what was the mass percent of arsenic trichloride

the excess I3- was titrated with 50.00 ml of a 0.02000 M Na2S2O3 solution. What was the mass percent of arsenic trichloride in the original sample?

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