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Hatshy [7]
3 years ago
10

What is the name for the point at which the indicator changes color in a titration? turning point end point indicator point colo

r point NextReset
Chemistry
2 answers:
Sedaia [141]3 years ago
8 0
It says on google
<span>An acid-base indicator (e.g., phenolphthalein) changes color depending on the pH. Redox indicators are also frequently used. A drop of indicator solution is added to the titration at the start; when the color changes the endpoint has been reached, this is an approximation of the equivalence point.</span>
Aloiza [94]3 years ago
8 0

Answer:

End point

Explanation:

Titration is a method of quantitative analysis which is employed to determine the concentration of unknown solutions.

Here a titrant of known concentration is added to a given volume of an analyte solution along with a suitable indicator. The titrant is added gradually until a color change in the analyte is observed. This point is known as the end point.

The end point is usually approximated as the equivalence point wherein the moles of titrant consumed equals the moles of analyte present.

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The radioactivity due to carbon-14 measured in a piece of a wooden casket from an ancient burial site was found to produce 20 co
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Answer:

17202.6 years

Explanation:

Activity of the living sample (Ao) = 160 counts per minute

Activity of the wood sample (A) = 20 counts per minute

Half life of carbon-14 = 5730 years

t= age of the artifact

From;

0.693/t1/2= 2.303/t log Ao/A

Then;

0.693/ 5730= 2.303/t log Ao/A

Substituting values;

0.693/5730= 2.303/t log (160/20)

Then we obtain;

1.209×10^-4 = 2.0798/t

t= 2.0798/1.209×10^-4

Thus;

t= 17202.6 years

Therefore the artifact is 17202.6 years old.

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Answer:

Please find the definition and further explanation below

Explanation:

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