Phosphorous acid, H3PO3(aq), is a diprotic oxyacid that is an important compound in industry and agriculture.Calculate the pH for each of the following points in the titration of 50.0 mL of a 3.0 M H3PO3(aq) with 3.0 M KOH(aq).
(a) before addition of any KOH
(b) after addition of 25.0 mL of KOH
(c) after addition of 50.0 mL of KOH
(d) after addition of 75.0 mL of KOH
e) after addition of 100.0 mL of KOH
In: Chemistry
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.140M HClO(aq) with 0.140M KOH(aq). The ionization constant for HClO is 4.0*10^-8 which was obtained from this site a) before addition of any KOH? b)after addition of 25.0 mL of KOH? c)after addition of 35.0 mL of KOH? d)after addition of 50.0 mL of KOH? e)after addition of 60.0 mL of KOH ?
In: Chemistry
The pKb values for the dibasic base B are pKb1 = 2.10 and pKb2 = 7.58. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.50 M B(aq) with 0.50 M HCl(aq).(a) before addition of any HCl (b) after addition of 25.0 mL of HCl (c) after addition of 50.0 mL of HCl (d) after addition of 75.0 mL of HCl (e) after addition of 100.0 mL of HCl
In: Chemistry
The pKb values for the dibasic base B are pKb1 = 2.10 and pKb2 = 7.53. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.75 M B(aq) with 0.75 M HCl(aq).
(a) before addition of any HCl
(b) after addition of 25.0 mL of HCl
(c) after addition of 50.0 mL of HCl
(d) after addition of 75.0 mL of HCl
(e) after addition of 100.0 mL of HCl
In: Chemistry
The pKb values for the dibasic base B are pKb1 = 2.10 and pKb2 = 7.38. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.70 M B(aq) with 0.70 M HCl(aq).
(a) before addition of any HCl ____
(b) after addition of 25.0 mL of HCL ____
(c) after addition of 50.0 mL of HCl ____
(d) after addition of 75.0 mL of HCl ____
(e) after addition of 100.0 mL of HCl ____
In: Chemistry
The pKb values for the dibasic base B are pKb1 = 2.10 and pKb2 = 7.59. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.85 M B(aq) with 0.85 M HCl(aq).
(a) before addition of any HCl (b) after addition of 25.0 mL of HCl (c) after addition of 50.0 mL of HCl (d) after addition of 75.0 mL of HCl (e) after addition of 100.0 mL of HCl
In: Chemistry
The pKb values for the dibasic base B are pKb1 = 2.10 and pKb2 = 7.32. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.80 M B(aq) with 0.80 M HCl(aq).
(a) before addition of any HCl
(b) after addition of 25.0 mL of HCl
(c) after addition of 50.0 mL of HCl
(d) after addition of 75.0 mL of HCl
(e) after addition of 100.0 mL of HCl
In: Chemistry
The pKb values for the dibasic base B are pKb1 = 2.10 and pKb2 = 7.37. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.55 M B(aq) with 0.55 M HCl(aq).
(a) before addition of any HCl
(b) after addition of 25.0 mL of HCl
(c) after addition of 50.0 mL of HCl
(d) after addition of 75.0 mL of HCl
(e) after addition of 100.0 mL of HCl
In: Chemistry
The pkb values for the dibasic base B are pkb1 = 2.10 and pkb2 = 7.34. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.50 M B(aq) with 0.50 M HCl (aq).
a) before addition of any HCl d) after addition of 75.0 mL of HCl
b) after addition of 25.0 mL of HCl e) after addition of 100.0 mL of HCl
c) after addition of 50.0 mL of HCl
In: Chemistry
A photon undergoes Compton scattering on a stationary electron. Before scattering, the photon's frequency is ν0, whereas after scattering said frequency is ν. After scattering, the photon's direction of movement is opposite to its original direction (scattering of 180 degrees), and the electron moves at a relativistic speed defined as 'v'.
a) the photon's wavelength before scattering was λ0=1 Angstrom. Calculate frequencies ν0 and v.
b) In this paragraph, ignore the numerical data given in paragraph a) and answer using the variables given in the main question and the physical constants 'me' and 'h' exclusively.
i) what will be the electron's direction of movement after scattering? Give a physical argumentation. Draw the problem, including the direction of movement before and after scattering.
ii) write out a relativistic formula for the conservation of Energy upon scattering.
iii) write out a formula for the conservation of Momentum upon scattering (using the same variables).
c) for the frequencies given in paragraph a), calculate the velocity of the electron, using the formula that you wrote out in paragraph b ii).
d) show that the values that you found in paragraph a) together with the velocity that you found in paragraph c) constitute a solution of the formula that you wrote out in paragraph b) iii).
THANK YOU!
In: Physics