Part A Calculate the [H₂O+] of a 0.897 mol L¹ citric acid (H, C6Hs O7) solution. (Kai = 7.4 x 104, Ka2 = 1.7 x 10-5) Express your answer to two significant figures. [H₂O¹] = Submit Previous Answers Request Answer ΑΣΦ X Incorrect; Try Again Part B Calculate the pH of this solution. Express your answer to two decimal places. pH = —| ΑΣΦ ? ? mol L-1

ACIDS AND BASES Calculating the pH of a weak base solution -8- The base protonation constant K, of lidocaine (CH, NONH) is 1.15 x 10 °. 14 Calculate the pH of a 0.30 M solution of lidocaine at 25 °C. Round your answer to 1 decimal place. pH =

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Calculate the pH of a 0.971 M solution of ammonia, NH3, given that Kb = 1.80 × 10–5.  Provide your answer to three decimal places. Do not enter units.

Complete the table below. Round each of your entries to 2 significant digits. You may assume the temperature is 25 °C. conjugate acid conjugate base formula HNO₂ K Ко formula ☐ 4.5 × 10 4 K₁₂ × -5 NH3 1.8 × 10 -7 HS 1.8 × 10 G x10

Calculate the pH of a 0.774 M solution of ammonia, NH3, given that Kb = 1.80 × 10–5.  Provide your answer to three decimal places. Do not enter units.

What is the pH of a 0.370 M aqueous solution of methylammonium chloride, CH3NH3Cl? The Kb of methyl amine, CH3NH2 is 4.4x10-4. You do not need to solve the quadratic equation for this problem. Express your answer to two decimal places.

-8 Calculate the pH of a 4.9 x 10 M aqueous solution of hydroiodic acid (HI). Round your answer to 2 decimal places.

If a sample of a certain solution is determined to have a pH of 3.7, what is the concentration of [H3O+] in the solution? Submit your answer in scientific notation and round off the significand (first number) of your answer to two decimal places. Answer x10 moles/liter Keypad Keyboard Shortcuts