could someone please help me answer number 2 and 3 Briefly explain the following
ID: 519159 • Letter: C
Question
could someone please help me answer number 2 and 3 Briefly explain the following terms as they relate to this experiment: a. end point b. standard solution c. phenolphthalein The molar concentration of a sample of hydrochloric acid (HCI) was studies by titration with standard 0.600 M NaOH. The following information was collected in the experiment. Completer the remainder of the data table. The difference between final and initial readings of a indicates the volume of NaOH used. From the procedure, write the balanced chemical equation for the neutralization reaction you will be performing in lab (NOT from #2).Explanation / Answer
volume of HCI 30 ML 50 ML
M oof NaOH 0.600 M 0.600 M
initial reading 0.0 15.7 mL
final reading 15.7 ml 42.5 ml
volume of NaOH =( initial - final reading )
(15.7-0.0 ) (42.5 - 15.7)
volume of naoh 15.7 26.7
moles of NaOH= molarity of NaOH x volume
0.600 x 30 ml/1000 0.600 x 50/1000
0.00942 moles 0.01602 moles
molarity of HCI = M1 V1 (HCI) = M2 V2 (NaOH)
M1x 30 = 0.600 x 15.7 M1 x 50 = 0.600 x 26.7
molarity = 0.314 M =0.320 M
moles of hcl = molarity x volume (litre )
= 0.314 x 30/1000 0.320 x 50/1000
= 0.00942 0.016 moles
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