Question

What instrument do you need to deliver A) 4.5mL +/- 0.15; B) 4.5mL +/- 0.02; C) 4.5mL +/- 0.07. I have the answers, however, the calculations need to be shown for how the answer was solved.

Answers: A) 10mL graduated cylinder; B) 10mL buret; C) 10mL pipet or 50mL buret. I have a table with tolerances for different volumetric apparatuses. A 10mL graduated cylinder has a 1 percent tolerance, a 10mL buret has a 0.2 percent tolerance, and a 50mL buret has a 0.10 percent tolerance. Please show your work.

Answer 1

100 x 10ml graduated cylinder has a 1 percent tolerance So tolerance = 10x = 0.1 mL So measurement is like (10+ 0.1) mL So, 10 mL graduated cylinder can deliver A) 4.5 mL 2015 * 10 ml buret has 0.2 percent tolerance So, tolerance = 10x 0.2 -0.02 mL So, measurement is like (101 0.02) ML u B) 4.5 mL I 0.02 can be delivered by to mL o buret. * Some buret has a 0.10 percent toe en So, tolerance = sox 0.10 so measurement is like 60+ 0.05) mL . c) 4.5 mL 10.07 can be delivered by 10 mL buret or so mL buret ML 103 201