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A greater volume of acid will be needed to neutralize the sodium hydroxide thereby making the calculated concentration of acid for the second trial to decrease.
Titration is usually a way of determining the concentration of an unknown solution by accurately measuring the volume of a known solution that reacts completely with the unknown solution.
The point when reaction is completed is indicated by the end point of the reaction. If more base (sodium hydroxide) is added to the flask, then more volume of acid will be needed to neutralize it thereby making the calculated concentration of acid for the second trial to decrease.
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Answer:8.933572
Explanation:
for an approximate result, multiply the volume value by 3.785
Answer:
Explanation:
To convert from moles to grams, we must use the molar mass. This is found on the Periodic Table. Look for Phosphorous or P.
- Phosphorus (P): 30.973762 g/mol
We can use this number as a ratio.
Multiply by the given number of grams: 15.62
Flip the fraction so the grams of phosphorus cancel.
Divide.
The original measurement of grams has 4 significant figures, so our answer must have the same.
For the number we calculated, that is the ten thousandth place. The 9 in the hundredth thousandth place tells us to round the 2 to a 3.
There are 0.5043 moles of phosphorus in 15.62 grams.