ANSWER THE QUESTIONS WITH EXPLANATION PLEASE Use of Excel in Analytical Lab temp

Question

ANSWER THE QUESTIONS WITH EXPLANATION PLEASE

Use of Excel in Analytical Lab temp 23.00 25.09 26.80 28.23 29.32 29.85 30.15 30.36 30.31 30.25 30.19 30.13 Thermometric Titration 0.00 2.00 4.00 6.00 7.90 10.15 12.04 4.13 15.98 18.00 20.00 22.00 10.00 9.00 8.00 2 7.00 6.00 5.00 400 o 300 2.00 1.00 0.00 y 0.9500x 0.0633 00294x7.7771 0.00 5.00 10.00 15.00 20.00 25.00 Titrant, mL What is the volume at the equivalence point for this titration? Calibration Curve for Enzyme Effectivness 22.4 C 0.09520.104 0.01030.081 0.000985 0.063 0.000101 0.039 0.0000121 0.020 0.12 y-0.0214x + 0.125*4 R2 0.9981 0.09 0.06 0.03 0.00 6.00 -5.00 4.00 3.00 2.00 1.00 0.00 log Mcatalyst What would be the expected rate for a catalyst molarity of.0415? Version 182

Explanation / Answer

1) The volume at the equivalence point is obtained by equating the two equations. This is true, since at the equivalence point, the change in temperature will be the same. Therefore, we must have

0.9500x + 0.0633 = -0.0294x + 7.7771

=====> 0.9500x + 0.0294x = 7.7771 – 0.0633

=====> 0.9794x = 7.7138

=====> x = 7.7138/0.9794 = 7.876 7.88

The volume at the equivalence point is 7.88 mL (ans).

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