Be sure to answer all parts. What are the concentrations of H20 and OH in tomatoes...
Be sure to answer all parts. Calculate the value of OH] from the given [H20*) in each solution and label the solution as acidic or basic: (a) [H30*) = 5.4 x 10-'M; (b) [H20*) = 8.2 x 10-SM. (a) *10 M, (select) y (6) * 10_ M, (select)
2 attempts left Check my work Be sure to answer all parts. What are the concentrations of Ho and OH in tomatoes that have a pH of 4.23 abi P9 video-СНСО.mp4 Type here to search
Be sure to answer all parts. Calculate the value of [OH) from the given [H2O* in each solution and label the basic: (a) [H3O+] = 5.5 x 10-10 M; (b) [H20*1 = 4.8 x 10-2 M. (a) (b) * 10 * 10 M, (select) $ M, (select) 4 Convert each H20* concentration to a pH value. a. 4.4 x 10-2 M b. 5.85 x 10-8 M
Be sure to answer all parts. What is the [H30") and the pH of a buffer that consists of 0.13 M HF and 0.27 M KF? (K, of HF = 6.8 x 10-4) *10 [H30*1- pH =
Be sure to answer all parts. What is the H30+ and the pH of a benzoic acid-benzoate buffer that consists of 0.17 M C6H3COOH and 0.35 M C6H3COONa? (K, of benzoic acid = 6.3 x 10-5) Be sure to report your answer to the correct number of significant figures. [H30+]= * 10 M pH =
Be sure to answer all parts. In a 0.25 M solution, a weak acid is 3.6% dissociated. (a) Calculate the [H30+ ], pH, [OH ], and pOH of the solution. [H30+]= M [OH]= X 10 pH = pOH = (b) Calculate Kg of the acid. KA=
Be sure to answer all parts. In a 0.20 M solution, a weak acid is 2.6% dissociated. (a) Calculate the [H3O+], pH, [OH], and pOH of the solution. [H30+] = _ M [OH] = * 10 M pH= pOH = (b) Calculate Kg of the acid.
Be sure to answer all parts. What is the [H3O+] and the pH of a buffer that consists of 0.10 M HF and 0.35 M KF? (K, of HF = 6.8 x 10-4) [H20+]= * 10 pH =
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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Be sure to answer all parts. What are the concentrations of HSO4−, SO42−, and H+ in a 0.55 M KHSO4 solution? (Hint: H2SO4 is a strong acid; Ka for HSO4− = 1.3 × 10−2.) [ HSO4− ] = M [ SO42− ] = M [ H+ ] = M