According to About.com, there are many methods to define acids and bases. Svante Arrhenius “acids produce H+ ions and bases produce OH- ions in aqueous solutions.”

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Some of the properties of Acids are:

·         Sour to taste.

·         Changes the color of a litmus paper from blue to red.

·         Aqueous solutions of acids are good conductors of electric current i.e., they form electrolytes.

·         Acids react with bases to form water and salts.

·         Produce H2 gas on reaction with a metal.

Properties of bases are as follows:

·         Bitter to taste

·         Slippery or soapy to touch and feel

·         Bases do not change the color of a litmus paper, they change the color of an acidified red litmus to blue

·         Aqueous solutions of bases are also good conductors of electric current and form good electrolytes.

·         Bases react with acids to form salts and water.

Various household articles and their response to litmus paper:

Vinegar: is 5% acetic acid and turns a blue litmus paper to red

Lemon juice: is acidic since it also turns a blue litmus paper to red

Soft drinks: Soft drinks convert a blue litmus paper to red indicating their acidic nature (carbonic acid).

Butter milk: Converts a blue litmus paper to red due to the presence of lactic acid.

Milk: Converts a blue litmus paper to red due to lactic acid.

Tap water: If tap water converts blue litmus to red, it indicates that the water is polluted and is acidic. Generally pure water is neutral and does not change the color of a litmus paper.

Cooking oil: It does not change the color of litmus paper thus showing its neutral nature.

Sodium Hydroxide (NaoH): when dissolved in water is basic in nature and converts an acidified red litmus paper to blue.

Household Ammonia when dissolved in water gives a basic solution of Ammonium Hydroxide and thus converts an acidified red litmus paper to blue.

Detergentsalso convert an acidified red litmus paper to blue indicating their basic nature.

Page 2 Acids and Bases in the Household Essay

Add two or three spoons of baking soda to some warm water in a wide mouthed bottle and dissolve by shaking. Then add a few drops of dish washer liquid to this solution. Next add vinegarto this liquid solution observing the reaction. A lot of foam is observed.

References

About: Chemistry. Acids and Bases (2007). Retrieved on March 20, 2007 from: http://chemistry.about.com/library/weekly/blacidbase.htm

About: Chemistry. How To Do a Vinegar & Baking Soda Foam Fight (2007). Retrieved on March 20, 2007 from: http://chemistry.about.com/od/chemistryhowtoguide/ht/foamfight.htm

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