Calculate the pH of an aqueous solution that is 1.0 M Na2CO3. Ka2 for H2CO3 is...

Calculate the pH of an aqueous solution that is 1.0 M Na2CO3. Ka2 for H2CO3 is 4.7 × 10-11. Please post full work and explanation. Thank you.

Expert Solution

Na2CO3 concentration = 1.0

Kb1 = Kw / Ka2

= 1.0 x 10^-14 / 4.7 x 10^-11

= 2.13 x 10^-4

CO32- + H2O -------------> HCO3- + OH-

1.0 0 0

1.0 - x x x

Kb1 = x^2 / 1.0 - x

2.13 x 10^-4 = x^2 / 1 - x

x = 0.0145

[OH-] = 0.0145 M

[H+] = 6.89 x 10^-13 M

pH = -log (6.90 x 10^-13)

pH = 12.16

queen_honey_blossom answered 2 years ago

A.What is the pH of 0.010 M of Na2CO3 solution? (Ka1 and Ka2 of H2CO3= 4.3...

A.What is the pH of 0.010 M of Na2CO3 solution? (Ka1 and Ka2 of H2CO3= 4.3 x 10-7 and 4.8 x 10^-11). B.Calculate the values of pH when 40.0 mL of 0.0250M benzoic acid (HC7H5O2, Ka=6.3x10-5) is titrated with 10.0 mL of 0.050 M NaOH solution?

What is the pH of a 1.0 M aqueous solution of HF?

Calculate the concentrations of all the species in a 0.487 M Na2CO3 solution. For H2CO3, Ka1...

Calculate the concentrations of all the species in a 0.487 M Na2CO3 solution. For H2CO3, Ka1 = 4.2 ×10−7 and Ka2 = 4.8 ×10−11. [CO32−] = M [Na+] = M [HCO3−] = M [OH−] = M [H2CO3] = M (Enter your answer in scientific notation.) [H+] = M (Enter your answer in scientific notation.)

Calculate the pH of an aqueous solution containing 1.0 x 10^-2 M HCL, 1.0 x 10^-2...

Calculate the pH of an aqueous solution containing 1.0 x 10^-2 M HCL, 1.0 x 10^-2 M H2SO4 (Ka1 = Ka2 = 1.2 x 10^-2 M HCN (Ka = 6.2 x10^-10).

Calculate pH of 0.10 M of Na2CO3?

A. Calculate the hydronium ion concentration in an aqueous solution of 0.185 M carbonic acid, H2CO3...

A. Calculate the hydronium ion concentration in an aqueous solution of 0.185 M carbonic acid, H2CO3 (aq) B. Calculate the concentration of HCO3- in an aqueous solution of 0.1860 M carbonic acid, H2CO3 (aq).

find the pH of an aqueous 0.050 M carbonic acid (H2CO3) solution. Ka1 = 4.3 x...

find the pH of an aqueous 0.050 M carbonic acid (H2CO3) solution. Ka1 = 4.3 x 10^-7, Ka2 = 5.2 x 10^-11.

Calculate the pH and the pOH of an aqueous solution that is 0.025 M in HCl...

Calculate the pH and the pOH of an aqueous solution that is 0.025 M in HCl ( aq ) and 0.085 M in HBr ( aq ) at 25 °C. p H = p O H =

Calculate the pH and the pOH of an aqueous solution that is 0.035 M in HCL...

Calculate the pH and the pOH of an aqueous solution that is 0.035 M in HCL (aq) and 0.075 M in HBr(aq) at 25.C.

Calculate the pH of an aqueous solution that is both 1.00 M CH3COOH and 1.00 M...

Calculate the pH of an aqueous solution that is both 1.00 M CH3COOH and 1.00 M CH3COONa. A buffer solution is 0.24 M NH3 and 0.20 M NH4Cl. (a) What is the pH of this buffer? (b) If 0.0050 mol NaOH is added to 0.500 L of this solution, what will be the pH?

Question