Q. 454.9( 7 Votes )
If someone is suffering from the problem of acidity after overeating, which of the following would y suggest as remedy?
Lemon juice, Vinegar, Baking soda solution
Give reason for your choice.
Answer :
Baking soda; being alkaline, it neutralises excess acid in the stomach and provides relief.
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PREVIOUSWhen a piece of limestone reacts with dilute HO, a gas X is produced. When gas X is passed through water then a white precipitate Y is formed. On passing excess of gas X, the white precipitate dissolve forming a soluble compound Z.
(a) What are X, Y and Z?
(b) Write equations for the reactions which take place:
(i) when limestone reacts with dilute HCl
(ii) when gas X reacts with lime water to form white precipitate Y
(iii) when excess of gas X dissolves white precipitate Y to form a soluble compound ZNEXTOn adding dilute hydrochloric acid to copper oxide powder, the solution formed is blue-green.
(a) Predict the new compound formed which imparts a blue-green colour to solution.
(b) Write a balanced chemical equation of the reaction which takes place.
(c) On the basis of the above reaction, what can you say about the nature of copper oxide?
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