Hint:[ (molar mass of H-1, N-14g/mol), (R-0.0821 L.atm/K.mol), (The specific heat of water is 4.184J/g. C) 1) Estimate the temperature where AG=0 for the following reaction: (Given: AH--195 kJ and AS-284.5 J/K) CAUTION: Beware of units.NH3(g) + HCl(g) NH4Cl(s) A) 685 K B) 467 K C) 582 K 2) Consider the reaction represented by the equation: N₂(g) + 3H₂(g) <-> 2NH3(g) Calculate the D) 634 K equilibrium pressures at a certain temperature: PNH,-3.7 x 10 atm, PN-8.9x10 atm, PH₂-2.9x 10 atm A) 6.3x104 B) 2.9x104 C) 5.3x10* D) 4.9 x10¹ 3) Consider the following reaction: 2 N₂O(g) If the half-life for the reaction is 0.810 s, the rate constant is: A) 1.1 s¹ B) 0.86 ¹ 4) Calculate AG for the reaction COO CO₂(g) CO +1/2Oz ) mà con A) 523 kJ C() +1/2020) Co)+ O₂(g) 2 NO(g) + O₂(g); rate=k[N:O] C) 0.69 s¹ AG=?? AG° -454.4 kJ AG=-257.2 kJ B)-265.8 kJ D) 651.6 kJ 5) The volume of a sample of nitrogen N₂ is 9 L at 31°C and 732 torr. What volume will it occupy at STP? A) 6.59 L B) 7.18 L C) 6.90 L D) 7.78 L 6) Which of the following pure substances exhibits hydrogen bonding? A) HCI B) H₂S C) CH₂ C) 197.2 kJ D) 0.32 s¹ D) H₂O 7) A particular vinegar solution has a H₂O* concentration of 0.0185 M. What is the pOH of the solution? A) 10.7 B) 17.3 C) 12.3 D) 15.8 8) What mass of ethylene glycol (M.W. = 62.1 g/mol) antifreeze must be added to 8.0 liters of water to produce a solution that freezes at -23.3 C degrees. Density of water is 1 g/ml and Kr-1.86° C/m. A) 3.41 g B) 6.22 Kg C) 7.81 kg D) 0.78 kg 9) How much heat is required to raise the temperature of 1.5 g of water from 25°C to 27°C? A) 12.55 kJ B) 6.27 kJ C) 1.55 kJ 10) Calculate the osmotic pressure associated with 90.0 g of an enzyme of molecular dissolved in 2900 mL of benzene at 30.0 °C. A) 5.99 torr B) 1.96 torr C) 0.484 torr 11) The OH concentration in a 0.09M of Ca(OH)2 solution is A) 0.0075 M B) 0.18 M D) 40.5 kJ weight 98,000 g/mol D) 2.48 torr C) 1.3x10-12 M D) 1x107 M 12) A solution of 7.00 MHCHO2 is 0.57% ionized in water. Calculate the K. value for the acid (HCHO2). B) 0.2x10-³ A) 2.5x10-³ C) 2.3x104 D) 0.23