Be sure to answer all parts. Calculate the concentrations of H2C204, HC204, C204-, and I' ions...
10 attempts left Check my work Be sure to answer all parts. Calculate the concentrations of H2C204, HC20, C20, and H at 25°C. (Ka, 6.5 x 10 and Ka, 6.1 x 105 for oxalic acid.) ions in a 0.183 M oxalic acid solution = [H2C2041= м [HC2041= м [C2021= x 10 м [H*] м (Enter your answer in scientific notation.)
Calculate the concentrations of H,C204, HC204,2042, and I species in a 0.170 M oxalic acid solution (K., - 6.5 10, K,, -6.1 * 10-S). Report your answers to 2 significant figures. [H2C,04] O M [HC,04 ]- M [C,042-] - X 10 M Enter your answer in scientific notation. [H] - M Calculate the concentrations of H*, HCO3 , and Co;? in a 0.045 M H,CO, solution. K 1 of carbonic acid is 4.2 x 10-7; K 2 is 4.8 x...
Be sure to answer all parts. Calculate the concentrations of H,SO4, HSO, SO and H ions in a 0.16 M sulfuric acid solution at 25°C. Assume H* ions and H3O* ions to be the same ions. (K, for sulfuric acid is 1.3 x 10.) [H,SO.]M HISO,] М [so М H'] М
Be sure to answer all parts. Calculate the Ka of a weak acid if a 0.063 M solution of the acid has a pH of 2.85 at 25 ° C. Ka = × 10 (Enter your answer in scientific notation.)
Be sure to answer all parts. Calculate the concentration of OH ions in a 7.60 x 10-3 M HCl solution. [OH]- *10 M Enter your answer in scientific notation.
Be sure to answer all parts. The pH of an aqueous acid solution is 6.24 at 25°C. Calculate the Ka for the acid. The initial acid concentration is 0.010 M. × 10 (Enter your answer in scientific notation.)
Be sure to answer all parts. Calculate the K, of a weak acid if a 0.057 M solution of the acid has a pH of 3.51 at 25°C. K, = x 10 (Enter your answer in scientific notation.)
Be sure to answer all parts.
The molecular scene at right depicts the relative concentrations of
H3O+ (purple) and
OH−
(green) in an aqueous solution at 25
°
C. (Counter ions and solvent molecules are omitted for
clarity.)
(a) Calculate the pH.
(b) How many H3O+ ions would you have to
draw for
every OH− ion to depict a solution of pH 4.90?
Enter your answer in scientific notation.
×
10
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3 attempts left Check my work Be sure to answer all parts. Calculate the K, of a weak acid if a 0.019M solution of the acid has a pH of 3.09 at 25°C. x 10 (Enter your answer in scientific notation.)
Be sure to answer all parts. How many moles and numbers of ions of each type are present in the following aqueous solution? Enter your answers for the numbers of ions in scientific notation. 651 mL of a solution containing 5.56 x 1024 formula units of potassium bromide per liter mol potassium x 10 (select i ons potassium mol bromide x 10 (select ions bromide