Sodium cyclopentadienide, NaC 5 H 5 , is a common reducing agent in the chemical laboratory, but there is a problem in using it NaC 5 H 5 is contaminated with tetrahydrofuran (THF), C 4 H 8 O, a solvent used in its preparation The THF is present as NaC 5 H 5 (THF) x , and it is generally necessary ...

Sure Ive calculated the value of x in the formula NaC5 ...

Sodium cyclopentadienide, NaC 5 H 5 , is a common reducing agent in the chemical laboratory, but

Question:

Sodium cyclopentadienide, NaC₅H₅, is a common reducing agent in the chemical laboratory, but there is a problem in using it: NaC₅H₅ is contaminated with tetrahydrofuran (THF), C₄H₈O, a solvent used in its preparation. The THF is present as NaC₅H₅ · (THF)_x, and it is generally necessary to know exactly how much of this NaC₅H₅ · (THF)_x is present. This is accomplished by allowing a small amount of the NaC₅H₅ · (THF)_x to react with water,

NaC₅H₅ · (C₄H₈O)_x + H₂O → NaOH(aq) + C₅H₅—H + x C₄H₈O

followed by titration of the NaOH(aq) with a standard acid. From the sample data tabulated below, determine the value of x in the formula NaC₅H₅ · (THF)_x.

Mass of NaC-H5.(THF)x Volume of 0.1001 M HCI required to titrate NaOH(aq) Trial 1 0.242 g 14.92 mL Trial 2