H2A is a diprotic acid with Ka1 = (4.160x10^-9) and Ka2 = (6.03x10^-11). What is the pH of a (8.320x10^-1) M solution of H2A? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10

Determine the [H+], [OH-], and pOH of a solution with a pH of 11.63 at 25 °C. [H*] = M [OH-] = M РОН %3 Determine the [H+], [OH-], and pH of a solution with a pOH of 3.10 at 25 °C. [H*] = M M = [-HO] pH =

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What is the pH of a solution of 1.0 × 10-9 M NaOH (include 1 digit after the decimal in your answer)?

Which of the following solutions would have the highest pH? Assume that they are all 0.10 M in acid at 25°C. The acid is followed by its Ką value. А) НОСІ, 2.9 х 10-8 В) НС ,H50, 1.3x 10-10 C) HNO2, 4.6 × 10-4 D) HCHO2, 1.8 × 10-4 E) HCIO2, 1.1 × 10-2

Given that Kb for NH3 is 1.8×10−5, calculate Ka for NH4+.Express your answer to two significant figures.Ka(NH4+) = -------------- Determine the pH of a 0.23 M solution of NH4Br.Express your answer to 2 decimal places.pH =

Determine the [H3O*] in a solution with a pH of 4.193. Your answer should contain 3 significant figures as this corresponds to 3 decimal places in a pH. [H30*]= N× 10 (Click to select) ♥ x 10 (Click to select) v M

If the pH of an unknown sample is 8.74, what is the OH- concentration in the sample?   Write the answer in scientific notation with 2 sig.dig.  For example if your answer is 3.49x10^3, write down 3.49e+3. The +/- signs are important!  Also, make sure there are no spaces between values, otherwise the answer will be considered incorrect!

A typical vitamin C tablet (containing pure ascorbic acid, H₂C6H606) weighs 500 mg. One vitamin C tablet is dissolved in enough water to make 240.0 mL of solution. Calculate the pH of this solution. Ascorbic acid is a diprotic acid. For H₂C6H606, Ka1 = 7.9×10-5 and Ka2 = 1.6x10-12. pH = Submit Answer [References] Try Another Version 1 item attempt remaining

For H3PO3, which is actually a diprotic acid, K1-2.04 x 102 and Ka2-4.56 x 10. Calculate the pH of a 0.428 molar solution of H-PO Report your answer with 2 places past the decimal point. Type your answer..