Question

COD 124 kJ/mol -124 kJ/mol -62 k/mol Question 9 10 pts Phosphorus trichlorides toxic and volatile liquid that can react with water to release Highs. Determine the normal boiling point or PC given that its enthalpy or vaporization (AM its entropy of vaporization (ASP) is 95 J/mol-K). ) 31.5 kmor and 58°C 0-272°C 0.33°C 76°C 332°C 10 pts Question 10 Consider the following reaction: N HB)-N () + 2H) AGA = -216 kJ (350) Calculate AG at 350 Kunder the following conditions: PMH = 0.25 at PH - 3.5 at P1 - 2,0 utm 131 104) 250k

Answer 1

question no 9 answer is option 1

  $\Delta$S(vap) = $\Delta$ H(vap) /T T =boiling point

31.5x103 /T = 95 T = 58 C0 (331.5K)

question 10. $\Delta$ rG = $\Delta$ rG0 + 2.303 RT log Kp Kp = PN2 x P2H2 /P N2H4 =  2x 3.52/.25 = 98

= -216 + 2.303 x8.314x10-3 x350 x log 98

= -202.59 Kj

in the question paper only three answers are visible so check for option -202.59 if this is not there then go for nearest number