Acids and Bases

Topics: Acid, PH indicator, PH Pages: 3 (519 words) Published: June 14, 2013
BACKGROUND INFORMATION
HOW DOES ONE DIFFERENTIATE THEM?
There are several ways to classify substances. One way is based on their pH. Substances may be * Acid 2. Base 3. Neutral

INDICATORS
This is a substance which is one color in and acid and another color in a base. Indicators can ten be used to test for the presence of acids or bases in a substance. Some are available in paper form (litmus) and others in liquid form (methyl orange). INDICATOR| COLOR IN ACID| COLOR IN BASE|

LITMUS | RED | BLUE| PHENOPTHALEIN| COLORLESS| PINK|
METHYL ORANGE| RED| YELLOW|
SCREENED METHYL ORANGE| RED| GREEN|
BROMOTHYMOL BLUE| YELLOW| BLUE|

THE pH SCALE
The strength of an acid or base is indicated by its pH. The pH scale is a number scale that indicates whether a substance is basic or acidic or neutral. * Acidic- have pH value less than 7 ( strongest acid is pH o) * Basic- have pH value of more than 7 ( strongest base is 14) * Neutral – have a pH of 7

ACIDS
An acid is a substance which produces ‘free’ hydrogen ions when dissolved in water. Their properties can only be exhibited when dissolved in water. Acids are classified based on their origin, strength and basicity. Acids are proton donors. PROPERTIES

* Clear colorless liquids
* Are corrosive
* Are electrolytes
* They are sour
* Have a low pH
* React with base to produce salt and water
The word ‘acid’ is derived from the Latin word ‘acer’ which means sour. BASES
A base is a proton acceptor. Many, but not all, are oxides and hydroxides of metals. They react with acids to form salts and water only and some are soluble in water, these are called alkalis. Alkalis are classified by their strength. PROPERTIES

* Neutralizes acids to form salts and water
* Corrosive
* Have high pH
* Conduct electricity...
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • Acid Base Titration 2015 Essay
  • Acid-Base Titration Essay
  • Unit Plan on Acids and Bases Research Paper
  • Acid- Base Titration Lab Research Paper
  • Lampunaya Leaf Extract as an Acid Base Indicator Essay
  • Essay about Acids and Bases
  • Essay about Acids, Bases & Buffers
  • Essay on Acid-Base Buffers

Become a StudyMode Member

Sign Up - It's Free