Use Hess's law and the changes in enthalpy for the following two generic reactions to calculate LaTeX: \DeltaΔH for the reaction 2A + B2C3LaTeX: \longrightarrow⟶ 2B + A2C3.

2A + 3/2 C2 LaTeX: \longrightarrow⟶ A2C3 LaTeX: \DeltaΔH=-1874 kJ

2B + 3/2 C2 LaTeX: \longrightarrow⟶ B2C3 LaTeX: \DeltaΔH = -285 kJ

Group of answer choices

-2159

+1589

-1589

+2159

12 is it do you think so

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