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Neutralization. NEUTRALIZATION REACTIONS. The reaction of an acid with a base to form a salt and water HCl + NaOH  NaCl + H 2 O. NEUTRALIZATION REACTIONS. Neutralization reactions are exothermic . Give off energy Spontaneous Mg(OH) 2 + 2HCl  MgCl 2 + 2H 2 O

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neutralization reactions
NEUTRALIZATION REACTIONS
  • The reaction of an acid with a base to form a salt and water

HCl + NaOHNaCl + H2O

neutralization reactions1
NEUTRALIZATION REACTIONS
  • Neutralization reactions are exothermic.
    • Give off energy
    • Spontaneous
  • Mg(OH)2 + 2HCl  MgCl2 + 2H2O
    • 1 mole of Mg(OH)2 neutralizes 2 moles of HCl
slide4

NEUTRALIZATION REACTIONS

  • Titration- the process of adding a substance of known concentration to a substance of unknown concentration until the substance of unknown concentration is completely reacted.
  • Titrant – solution of known concentration used to titrate a solution of unknown concentration
    • Also called standard solution
neutralization reactions2
NEUTRALIZATION REACTIONS
  • Indicators are often used to determine this equivalence point.
    • The # of moles of H+ = # moles of OH-
    • This signals the end of the reaction
  • You should be able to identify indicators such as bromthymol blue and phenolphthalein.
  • The point at which the indicator used in the titration changes color is called the end point.
neutralization reactions3
NEUTRALIZATION REACTIONS
  • Buret- instrument used in a titration.
question
Question

Label the parts on this buret. Indicate where the titrant would go.

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