Neutralization of an acid or base
This presentation is the property of its rightful owner.
Sponsored Links
1 / 9

Neutralization of an acid or base. PowerPoint PPT Presentation


  • 53 Views
  • Uploaded on
  • Presentation posted in: General

Neutralization of an acid or base. Mixing acids and bases. ~creates water H 3 O + + OH -  2 H 2 O this is called neutralizing the solution a neutralized solution is no longer dangerous. The point where neutralization is complete is called the equivalence point. Salts.

Download Presentation

Neutralization of an acid or base.

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Neutralization of an acid or base

Neutralization of an acid or base.


Mixing acids and bases

Mixing acids and bases

  • ~creates water

  • H3O+ + OH- 2 H2O

  • this is called neutralizing the solution

  • a neutralized solution is no longer dangerous.

  • The point where neutralization is complete is called the equivalence point


Salts

Salts

  • ~the byproduct of an acid and a base.

  • NaOH + HCl  H2O + NaCl

  • (base) (acid) (water) (salt)

  • there are several more than just table salt.

  • HNO3 + NH4OH  H2O + NH4NO3

  • Acid Base water salt


Gases can be created

Gases can be created

  • this depends on the reactants (not all will)

  • sodium bicarbonate (baking soda) will pretty much always release a gas

  • NaHCO3 + H2SO4H2O + NaHSO4 +CO2

Salt

Gas


Titration

Titration

  • ~mixing an acid and base perfectly to make a neutral solution.

  • You normally need some kind of indicator for this.

  • Phenolphthalein- when in solution turns red if basic and is clear if acidic.

  • You can also use a pH probe


Graph of titration

Graph of titration

equivalence point

pH

Volume strong base added


Using math

Using math

  • To neutralize a solution you will need to add an equal amount of H3O+ / OH- to what was already present.

  • so that

  • mol H3O+ = mol OH-

  • This is used if and only if you are at the equivalence point (completely neutral solution)!


Problem

Problem

  • If 94 mL of 4.0 M NaOH neutralizes 6.0 L of an unknown strong acid, what was the H3O+concentration of the unknown?

  • 4 M NaOH x .094 L = .376 mol NaOH

  • .376 mol H3O+/ 6.0 L = .063 M H3O+


Another problem

Another problem

  • If 127 mL of 2.0 M NaOH neutralizes 4.1 L of an unknown acid, what is the initial concentration of the acid?

  • 2.0M(.127 L) = .254 mol NaOH

  • =.254 mol OH- = .254 mol H3O+

  • 4.1 L

  • =.062 M


  • Login