The equivalence point during a weak acid-strong base titration, the pH will be determined from ___.
1 answer:
Answer:
The pH will be determined from the equivalence point i.e. "greater than 7."
Explanation:
In the titration between the weak acid along with a strong base, the conjugate base of the weak acid will probably make the pH at the equivalence point which is greater than 7. Hence, an indicator is required to know the pH change at this range. Basically phenolphthalein is used as an indicator in this case. The weak acid will turn into bright pink. After this if excess of the hydrogen ions are added then the position of the equilibrium will be shifted to the left and make the indicator colorless.
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Answer: We take 20 ml of 1.0 M fruit drink and add 80 ml of water to get 100 ml of 0.2 M solution.
Explanation:
According to the neutralization law,
where,
= molarity of stock solution = 0.2 M
= volume of stock solution = 100 ml
= molarity of resulting solution = 1.0 M
= volume of resulting solution = ?
Now put all the given values in the above law, we get the volume of resulting solution.
Therefore, the volume of 1.0 M required is 20 ml.
We take 20 ml of 1.0 M fruit drink and add 80 ml of water to get 100 ml of 0.2 M solution.