1 / 11

Properties of Acids and Bases in Chemistry

Discover the key properties of acids and bases, their reactions, and indicators. Learn about Arrhenius Theory and neutralization reactions. Time to dive into the world of chemistry!

vladimir-dejesus
Download Presentation

Properties of Acids and Bases in Chemistry

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 10 ACIDS and BASES

  2. PROPERTIES OF ACIDS • All acids contain the element hydrogenin a combined form. • HC2H3O2 acetic acid (vinegar) • HCl hydrochloric acid • H2SO4 sulphuric acid • All acids have a sour taste. • Acids are corrosive (eat away or destroy a substance.)

  3. PROPERTIES OF ACIDS • Acids react with metals to produce hydrogen gas and a salt. Zn + 2 HCl  ZnCl2 + H2 • Acids react with carbonates (CO32-) or bicarbonates (HCO31-) to produce carbon dioxide, water and a salt. 2HCl + CaCO3 CO2 + H2O + CaCl2

  4. PROPERTIES OF ACIDS • Acids are good electrolytes. • Acids are produced by reacting non-metallic oxides with water. These non-metallic oxides are called acid anhydrides. SO3 + H2O  H2SO4

  5. PROPERTIES OF ACIDS • Acids change the colour of indicators. • Red litmus paper remains red • Blue litmus paper turns red • Phenolphthalein remains colourless • Bromthymol blue turns yellow • Methyl orange turns red

  6. PROPERTIES OF BASES • Most bases contain the hydroxide ion (OH-). • NaOH sodium hydroxide • Ca(OH)2 calcium hydroxide • NH4OH ammonium hydroxide • Some bases contain the bicarbonate ion (HCO3-). • NaHCO3 sodium bicarbonate • KHCO3 potassium bicarbonate

  7. PROPERTIES OF BASES • All bases have a bitter taste and feel slippery, slimy or soapy • Bases are good electrolytes. • Bases are caustic (eat away flesh)

  8. PROPERTIES OF BASES • Bases are prepared by: • an active metal reacting with water. Ca + H2O  Ca(OH)2 + H2 • A metallic oxide reacting with water. These metallic oxides are called basic anhydrides. Na2O + H2O  2NaOH

  9. PROPERTIES OF BASES • Bases change the colour of indicators. • Red litmus paper turns blue • Blue litmus paper remains blue • Phenolphthalein turns pink • Bromthymol blue remains blue • Methyl orange remains orange

  10. Definitions of Acids and Bases • Arrhenius Theory • An acid ionizes in water to increase the hydrogen ion concentration. • A base dissociates in water to increase the hydroxide ion concentration. • A neutralization reaction involves the reaction of a hydrogen ion with a hydroxide ion to produce water.

  11. Time to Get To Work • Learning Check pg 457 • # 1- 4, 6

More Related