0.01 M of methylamine has a pH of 11.269 what is the pka for methylamine?

Please calculate the percentage of ethylenediamine in the predominant form at pH 6.043, pKb1 of ethylenediamine is 4.072 and pKb2 is 7.152 Thank you very much please answer in percentage

HIn(aq) + H2O(l) H3O+(aq) + In-(aq)red yellowThe acid base indicator methyl orange is red at pH values below 3 and is yellow at pH values above 6. Usingyour knowledge of pH, indicators and pKa values, predict the pKa of methyl orange.

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Calculate the pH of a 0.105 M solution of ethylenediamine (H,NCH,CH,NH,). The pKa values for the acidic form of ethylenediamine (H†NCH,CH,NH) are 6.848 (pKa1) and 9.928 (pK22). pH Calculate the concentration of each form of ethylenediamine in this solution at equilibrium. [H,NCH,CH,NH,] = M [H,NCH,CH,NH; 1 = M [HNCH,CH,NH] = M

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A monoprotic weak acid (HA) has a pKa value of 4.896. Calculate the fraction of HA in each of its forms (HA, A¯) at pH 6.262. CHA = = What is the quotient [A"] at pH 6.262? [HA] [A] [HA]

Calculate the pH of the solution after the addition of each of the given amounts of  0.0603 M HNO3  to a  60.0 mL  solution of  0.0750 M  aziridine. The  p?a  of aziridinium is  8.04. What is the pH of the solution after the addition of  0.00 mL HNO3? pH= What is the pH of the solution after the addition of  7.79 mL HNO3? pH= What is the pH of the solution after the addition of a volume of  HNO3  equal to half the equivalence point volume?pH= What is the pH of the solution after the addition of  70.5 mL HNO3? pH= What is the pH of the solution after the addition of a volume of  HNO3  equal to the equivalence point?pH= What is the pH of the solution after the addition of  77.9 mL HNO3? pH=

An analytical chemist is titrating 150.8 mL of a 0.2000M solution of diethylamine ((C2H2)2NH) with a 0.4800M solution of HNO3. The pK, of diethylamine is 2.89. Calculate the pH of the base solution after the chemist has added 21.7 mL of the HNO3 solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO3 solution added. Round your answer to 2 decimal places. pH =

Acid Conjugate base Acid H2CO3 HCO3 Base Strength Strength Increases Increases H2PO4 HPO,- (1) The acid with the smallest value of Ka is (A) H2CO3 (B) H2PO4 (1) The acid with the largest value of pKa is (A) H2CO3 (B) H2PO4