Determine the empirical formulas for the following compounds:
(a) caffeine, c8h1on4o2
(b)fructose, c12h22o11
(c)hydrogen peroxide, h2o2
(d) glucose, c6h12o6
(e) ascorbic acid (vitamin c), c6h8o6

a)C4H5N2O

b)C12H22O11

c)HO2

d)CH2O

e)C3H4O3

Explan ation:

To obtain th e empirical formul a from the molecular for mula you have to divide the subscripts by the largest whole number you can, that provide you a whole number for each one subscripts:

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole