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

  Define monohydrate is best described as

The formula weight of MnSO4 monohydrate is 168.97 g/mol. MUST SHOW WORK!! A) hydrated B) solvated C) saturated D) unsaturated E) supersaturated

  A police officer is driving due north at a constant speed

a police officer is driving due north at a constant speed of22 ms relative to the ground when shenotices a truck on the

  Explain how many millirem did the child receive

A 24-kg child receives 2.85x10^6 B particles, each with an energy of 4.30x10^-13 J. If the RBE=0.40, how many millirem did the child receive?

  Explain the equilibrium constant for hydration

how to you determine the equilibrium constant for hydration. Rank the carbonyl compounds, but i'm not even sure how to figure it out in the first place

  What is its vapour pressure

A liquid has a H vaporization of 35.5kJ/mol and a boiling point 0f 122 degrees celcius at 1.00 atm.What is its vapour pressure at 109 degrees celcius.

  If the heat of neutralization of aqueous benzoic acid is

if the heat of neutralization of aqueous benzoic acid is 54.6 kjmol what is the enthalpy of ionization on benzoic

  How many carbon atoms does the sample contain

A sample of ethanol (C2H5OH) has a mass of 45.0 g. How many carbon atoms does the sample contain?

  How many grams of sodium sulfide are formed if 160 g of

how many grams of sodium sulfide are formed if 1.60 g of hydrogen sulfide is bubbled into a solution containing 2.13 g

  Compute the mass percent of ethane in the original mixture

9.780 grams of gaseous mixture contains ethane ,C2H6 and propane ,C3H8. it needs 1.120mol of oxygen when complete combustion to form CO2 and H2O. Compute the mass percent of C2H6 in the original mixture.

  Explain how grams of cu would be deposited at 81oc

Explain how grams of Cu would be deposited and how many liters of Cl2 gas would be produced at 81oC and 1.96atm by passing a current of 22.0 A for 16.0 hrs

  Explain equilibrium membrane potential for the case

The equilibrium membrane potential for the case of multiple ions will depend not only on the concentrations of the ions within and outside the cell, but also on the permeability of the cell membrane to each ion Pi. Consider a situation in which on..

  Evaluate the standard gibbs free energy

A titration was performed at 25 degrees C and the Ksp of a slighlty soluble salt was determined to be 1.5×10-4. Calculate the standard Gibbs Free Energy of this salt. R = 8.314 J/mol-K

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