Benzoic acid formula

  1. Calculating Equilibrium Concentrations
  2. Benzoic acid


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Calculating Equilibrium Concentrations

\( \newcommand\) • • • • • • • • • • • • • • \(K_a\) is an acid dissociation constant, also known as the acid ionization constant. It describes the likelihood of the compounds and the ions to break apart from each other. As we already know, strong acids completely dissociate, whereas weak acids only partially dissociate. A big \(K_a\) value will indicate that you are dealing with a very strong acid and that it will completely dissociate into ions. A small \(K_a\) will indicate that you are working with a weak acid and that it will only partially dissociate into ions. General Guide to Solving Problems involving \(K_a\) Generally, the problem usually gives an initial acid concentration and a \(K_a\) value. From there you are expected to know: • How to write the \(K_a\) formula • Set up in an ICE table based on the given information • Solve for the concentration value, x. • Use x to find the equilibrium concentration. • Use the concentration to find pH. How to write the \(K_a\) formula The general formula of an acid dissociating into ions is \[HA_\] This can be flipped to calculate pH from hydronium concentration: \[pH = -\log[H_3O^+]\] • An acidic solution is one that has an excess of \(H_3O^+\) ions compared to \(OH^-\) ions. • An basic (or alkaline) solution is one that has an excess of \(OH^-\) ions compared to \(H_3O^+\) ions. • A neutral solution is one that has equal concentrations of \(OH^-\) ions and \(H_3O^+\) ions. At 25 °C, we can correlate whether a solution is a...

Benzoic acid

• References • Fema No: 2131 Sigma-Aldrich • Spectroscopy • Lambda Max: 300 FooDB • Experimental Physico-chemical Properties • Experimental Melting Point: 125 °C TCI 121-124 °C Alfa Aesar 123 °C ONSChallenge 122 °C OU Chemical Safety Data (No longer updated) 122-125 °C Merck Millipore 122.5 °C Jean-Claude Bradley Open Melting Point Dataset 122.35 °C Jean-Claude Bradley Open Melting Point Dataset 122.4 °C Jean-Claude Bradley Open Melting Point Dataset 123 °C Jean-Claude Bradley Open Melting Point Dataset 122 °C Jean-Claude Bradley Open Melting Point Dataset 121-124 °C Alfa Aesar 121-125 °C Oakwood 122 °C FooDB 122.4 °C Wikidata 121-125 °C Sigma-Aldrich 122 °C Kaye & Laby (No longer updated) 121-125 °C Oakwood • Experimental Boiling Point: 249 °C Alfa Aesar 249 °C Food and Agriculture Organization of the United Nations 249 °C OU Chemical Safety Data (No longer updated) 249 °C Alfa Aesar 249 °C (Literature) Oakwood 133 °C / 10 mmHg (296.6803 °C / 760 mmHg) FooDB 249 °C Sigma-Aldrich 249 °C / 760 mmHg Kaye & Laby (No longer updated) 249 °C Oakwood • Experimental LogP: 1.87 Egon Willighagen • Experimental Flash Point: 121 °C Alfa Aesar 121 °C OU Chemical Safety Data (No longer updated) 121 °C Alfa Aesar 121 °F (49.4444 °C) Alfa Aesar 121 °C Oakwood 121 °C Sigma-Aldrich 121 °C Oakwood • Experimental Refraction Index: 1.5397 Kaye & Laby (No longer updated) • Experimental Density: 1.32 g/mL Alfa Aesar 1.266 g/mL / 15 °C Kaye & Laby (No longer up...