Acids

What is an acid?

• An acid is a solution that has an excess of H+ ions. It comes from the Latin word acidus that means "sharp" or "sour".

• The more H + ions, the more acidic the solution.

Properties of an Acid

• Tastes Sour
• Conduct Electricity
• Corrosive, which means they break down certain substances. Many acids can corrode fabric, skin,and paper
• Some acids react strongly with metals
• Turns blue litmus paper red

 Uses of Acids

• Acetic Acid = Vinegar
• Citric Acid = lemons, limes, & oranges. It is in many sour candies such as lemon head & sour patch.
• Ascorbic acid = Vitamin C which your body needs to function.
• Sulfuric acid is used in the production of fertilizers, steel, paints, and plastics.
• Car batteries

Q:
   Name some strong acids and the pH values?

 

pH Scale

pH Scale

pH Scale

• pH is a measure of how acidic or basic a solution is.
• The pH scale ranges from 0 to 14.
• Acidic solutions have pH values below 7
• A solution with a pH of 0 is very acidic.
• A solution with a pH of 7 is neutral.
• Pure water has a pH of 7.
• Basic solutions have pH values above 7.
• A change of 1 pH unit represents a tenfold change in the acidity of the solution.
•  For example, if one solution has a pH of 1 and a second solution has a pH of 2, the first solution is not twice as acidic as the second—it is ten times more acidic

pH Scale