Some dilute hydrochloride acid is gradually added to half a beaker of aqueous sodium hydroxide until the PH of a meter changes to 7 .
A) What can you use to find out if the PH of the mixture has changed to 7 ?
B) is the mixture acidic , alkaline or neutral when pH is 7 ?
C)What are the products formed when dilute hydrochloric acid is mixed with sodium hydroxide solution ? Are the products formed elements or compounds ?
D)What will happen to the pH of the mixture if more dilute hydrochloric acid is added ?
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Answer:
(a)acid base reaction ie acid is added to base to make the solution neutral
(b)neutral when pH is 7
(c)NaCl(salt) and water
(d)the pH value will decrease from 7 as the solution will become more acidic
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