Presentation Transcript
Acid Base Reactions :Acid Base Reactions
Slide 2:Acid Rain damage
Reaction Definition :Reaction Definition When two or more compounds or elements combine to produce a new substance with different physical and chemical properties.
Acid :Acid An acid is a chemical that donates Hydrogen ions to a reaction
HCl + NaOH ? NaCl + HOH
Acids react with metal to release Hydrogen gas
Acids have a pH from 0 to 6.9
Acids Taste sour
Slide 5:Hydrochloric Acid HCl
Sulfuric Acid H2SO4
Nitric Acid HNO3
Carbonic Acid H2CO3
Hydrofluoric Acid HF
Bases :Bases Bases are chemicals that donate OH hydroxide ions to a reaction
Bases taste bitter
Bases have a p.H. from 8 to 14
Slide 7:Saponifacation is the reaction of fats with bases to make soap
Slide 8:Sodium Hydroxide NaOH
Potassium Hydroxide KOH
Magnesium Hydroxide Mg(OH)2
p.H. :p.H. P.H. is a measure of the strength of an acid or base
Acids 0-6.9 more H+
Neutral 7 (Pure Water) same number of H and OH
Bases 8-14 More OH
Indicators :Indicators Indicators are chemicals that change colors in the presence of an acid or a base
Phenolphthalein – red in p.H. of 8.2 or higher
Universal Indicator p.H. 2-12
Neutralization Reactions :Neutralization Reactions When an acid and a base react they are both neutralized, turned into salt and water.
Slide 13:HCl + NaOH ? NaCl + H2O
HCl + KOH ? KCl + H2O
H2SO4 + NaOH ? NaSO4 + H2O + H2