Question

Multiple Choice Identify the choice that best completes the statement or at the question 1. ALOK, the entropy of a perfect crystal is -0 d. > 0, -0, or <0, depending on the chemical structure of the crystal e > 0 or=0. depending on the chemical structure of the crystal 2. At constant and P. any reaction will be spontaneous if a. ME> AS. b. MG.0. .. . C AS..> 3. The following figures represent distributions of two types of molecules between by an open tube. In which figure is the entropy of the system maximized There we alpy wystems 4. Indicate which of the following reactions results in a positive AS a. Ba(NO )+Na.SO ) BaSO (s) 2 NaNO ) 4 Fers)+30 ) 2 0 ,0) 2 H.(g) +0. ) 5 2 H. Olg) d. Zn(s) + 2 HCl(aq) = ZnCl(a) H. (g) 2 Na(s) + .) Naa) 5. What is the entropy change in the surroundings when one mole of ice melts at 0.00 maintained at 32.0 "C? The heat of fusion of ice is 6.01 Jmol. a -188 JK d +19.7 JK b -220 JK IS JK C. 197K 6. Determine AS for the reaction 2 FDs) = 4Fe()+30 (8) given the following in Substance SJ/mol x K) Fe06) Fest O- 2050 a. -144.9 J/mol K -549.4 mol K 494 molk -141 mol K c 7. According to the second law of thermodynamics, the change in the entropy of the un spontaneous reaction is a. zero.

Answer 1

1. b) =0

Entropy of perfect crystal is 0 at 0 k according to third law of thermodynamics. At 0 k entropy which is a measure of randomness stops and is 0.

2. b) ∆Gsys<0 , reaction will be spontaneous.

( Note- In case of more than 1 questions we are entitled to answer only 1st question, but I have answer first 2 question. I hope it help you)