Hi,
The given species can be dissociated as
NaClO >> Na+ + ClO-
Now,
ClO- + H2O <----> HClO + OH-
The constant of this reaction also called hydrolysis constant is
Kw/ Ka = 1.x 10^-14 / 3.2 x10^-8 = 3.1 x 10^-7
3.1 x 10^-7 = x^2 / 0.5 -x
solving above expression for x
x = [OH-] = 4.29*10-4 M
log(OH) = pOH
pOH = 3.36
pH = 14 - 3.36 = 10.63
Thank You
Calculate the pH at 25C of a 0.92 M solution of sodium hypochlorite (NaClO). Note that hypochlorous acid (HClO) is a weak acid with a pKa of 7.50 . Round your answer to 1 decimal place.
Question 20 Calculate the pH of a 0.35 M solution of sodium hypobromite, NaClo. The acid dissociation constant for HBrO is 2.6 x 10 8.13 11.06 0 2.94 4.96 9.04
Calculate the pH at 25 °C of a 0.91 M solution of sodium hypochlorite (Naclo). Note that hypochlorous acid (HCIo) is a weak acid with apKg of 7.50 Round your answer to 1 decimal place.
HClO is a weak acid (Ka=4.0×10−8) and so the salt NaClO acts as a weak base. What is the pH of a solution that is 0.014 M in NaClO at 25 °C?
What is the pH of a 0.10 M NaClO solution if Ka for HClO is 3.0 x 10^-8?
A 0.200 M solution of NaClO prepared by dissolving NaClO in water. A 55.0 mL sample of this solution is titrated with 0.200 M HCl.K_a for HClO is 3.5 times 10^-8. Calculate the pH of the solution at each of the following points of the titration: a. Prior to the addition of any HCl b. Halfway to the equivalence point c. At the equivalence point d. After 6.00 mL of HCl has been added beyond the equivalence point
The pH of an aqueous solution of 0.282 M sodium hypochlorite, NaClO (aq), is ________. ACIDIC OR BASIC OR NEUTRAL?
What is the pH of a 0.255 M aqueous solution of sodium hypochlorite, NaClO? (Ka for HClO = 3.5×10-8)
a. A buffer solution is 0.480 M in HClO and 0.367 M in NaClO . If Ka for HClO is 3.5×10-8 , what is the pH of this buffer solution? b. A buffer solution is 0.481 M in H2S and 0.294 M in NaHS. If Ka1 for H2S is 1.0x10^-7, what is the pH of this buffer solution?
The pH of a 1.50 M solution of HClO is 3.67. pH = pKa + log [base] / [acid] a. Calculate the Ka of HClO. b. Calculate the pH and the percent dissociation of a 0.0100 M solution of NaClO.