Question

Identify two acids and two bases that you use or come into contact with in an average week. Identify uses for each substance.

Answer 1

Explanation:

Two acids we come into contact with in an average week

1. Vinegar is an 10% solution of acetic acid $(CH_3COOH)$in water. Used in salad dressing and while cooking food. It has a sour taste.
2. Citric acid present in fruits and vegetables like : lemons, orange, tomatoes etc. It is a weak organic acid with sour taste.

Two bases we come into contact with in an average week.  

1. Baking soda ($NaHCO_3$) is used in baking food like: cakes, cookies, breads. Baking soda is one of the ingredient while baking breads and cakes.
2. Caustic soda (NaOH) is used for preparation of detergents, papers , soaps etc. We use soaps and detergents for washing.

Answer 2

1 common acid that is used on a daily basis is Hydrochloric Acid in your stomach. It actives the enzyme pepsin into pepsinogen to degenerate proteins. Another acid is vinegar which is used in cooking and cleaning. 

A base I use on a daily basis is Tums as it has sodium bicarbonate, a common base used to neutralize stomach acids. Another one is ammonia which is used for hair and cleaning products.