1 / 8

Neutralization Reaction

Neutralization Reaction. Base and acid react to produce a salt and water. Titration. A lab technique where a neutralization reaction is preformed to determine the concentration of an unknown. The anatomy of a titration:. Standard solution - solution of known concentration.

kalin
Download Presentation

Neutralization Reaction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Neutralization Reaction • Base and acid react to produce a salt and water

  2. Titration • A lab technique where a neutralization reaction is preformed to determine the concentration of an unknown.

  3. The anatomy of a titration: • Standard solution - solution of known concentration. • End Point - the point at which neutralization is achieved • Indicator - chemical that changes color with a change in pH. We will be using phenolphthalein. Clear in an acid pink in a base You want a light pink • Buret - Measurement device

  4. Titration Calculations4 steps • Start with the balanced equation • Find the moles in the standard solution • Set up ratio to find moles of unknown • Find molarity(mol/L) or volume

  5. Titration Calculations example problem • A 25.75 ml solution of H2SO4 is neutralized by 18.23 ml of 1.0 M NaOH. What is the concentration of H2SO4? • H2SO4 + 2 NaOH --> Na2SO4 + 2 H2O • 0.01823 L NaOH 1.0 mol NaOH 1 mol H2SO4 1 L NaOH 2 mol NaOH 0.02575L H2SO4 • = 0.35 mol/L H2SO4

  6. Titration Problemsyour turn • What is the molarity of phosphoric acid if 15.0 mL of the solution is neutralized by 8.5 mL of 0.15 M NaOH? • H3PO4 + 3 NaOH --> Na3PO4 + 3 H2O • 0.0085 L NaOH 0.15 mol NaOH 1 mol H3PO4 1 L NaOH 3 mol NaOH 0.0150 L H3PO4 = 0.028 mol/L H3PO4

  7. Titration Problems1 more your turn • How many milliliters of 0.45 M hydrochloric acid must be added to 25.0 mL of 0.15 M NaOH? • HCl + NaOH --> NaCl + H2O • 0.0250 L NaOH 0.15 mol NaOH 1 mol HCl 1L HCl 1000 mL 1 L NaOH 1 mol NaOH 0.45 mol HCl 1L = 8.3 mL HCl

More Related