Which one of the following household substances is a base? Washing soda Table sa

Question

Which one of the following household substances is a base? Washing soda Table salt Tomato ketchup Vinegar

A Bronsted-Lowry base is defined as: an electron pair acceptor a hydroxide donor a proton donor a proton acceptor a hydroxide acceptor  

Vinegar is a very diluted ___________________ acid. citric phosphoric carbonic acetic

5. Which one of the following acids is contained in milk? Carbonic acid Lactic acid Citric acid Hydrochloric acid

6. Which one of the following substances is not a base? NaOH H2SO4 KOH NH3

7. Red cabbage contains a dye that can act as an indicator, with colors shown below: xid-112395442_2 A substance is tested with this indicator and the colour changes to blue. This substance is most likely to be: Sodium hydroxide solution Hydrochloric acid Sodium chloride solution

8. Ammonia is found in many household products such as window cleaner. What is its pH? 1 7 10 3

9. Which one of the following pHs is that of an acid? 8 4 7 14

10 what is the pH of a 0.00001 M HCl solution? 4 1 5 9

Explanation / Answer

Ans : Wasing soda

Wasing soda with formula Na2CO3 is basic in nature. When dissolved in water , it dissociates as weak acid , carbonic acid and a strong alkali NaOH . So it acts as basic when it is dissolved in water.

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