WebChemistry questions and answers. 1. Calculate the [H3O+], [OH−],pH, and pOH of a 0.386M ethylamine (C2H5NH2) solution. The Kb of C2H5NH2 is 5.6×10−4 2. What is the percent ionization of propionic acid (CH3CH2COOH) in a solution that is 0.45MCH3CH2COOH ? WebbAnnual Reports, 1906-1923 14 723-731 Potlatch Lumber Company. Monthly Financial Statements, 1905-1915 102 732 Forest Development Company. Annual Report to Board of Directors, 1935 1 22 733-734 Humbird Lumber Company. Annual Reports, 1910-1914 7 735 Potlatch State Bank. Cashier's Annual Report, 1935 1 736 Standard Lumber …
pH & pOH Calculations Quiz : ChemQuiz.net
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WebUse your calculated value of [OH-] to find pOH and compare your value to that given in the question: pOH = -log 10 [OH-] = -log 10 [3.98 × 10-5] = 4.4 Since this value is the same as that given in the question, we are confident our answer is correct. State your ... Web29 aug. 2024 · Since the concentration of OH - is known, the pOH value is more useful. pOH is calculated by the formula pOH = - log [OH - ] Enter the concentration found before pOH = - log (0.05) pOH = - (-1.3) pOH = 1.3 The value for pH is needed and the relationship between pH and pOH is given by pH + pOH = 14 pH = 14 - pOH pH = 14 - 1.3 pH = 12.7 … Web29 nov. 2024 · How to calculate poh on a scientific calculator? pOH = -log[OH -] pOH = -log[4.22 x 10 -5] To find this on a scientific calculator, enter 4.22 x 5 (make it negative using the +/- key), press the 10 x key, and press equal to get the number in scientific … property for sale in aberdeen wa