Question

Calculate Delta Sdeg univ for the following reaction. Determine if spontaneous or nonspontaneous. T=298K SiO2(s)+4HF(g)->SiF4(g)+2H2O(l) SiO2(s)+4 HF(g) -> SiF4(g)+2 H2O(l) nonspontaneous.T=298 K 

          Calculate Delta Sdeg  univ for the following reaction. Determine if spontaneous or nonspontaneous. T=298K
SiO2(s)+4HF(g)->SiF4(g)+2H2O(l)
SiO2(s)+4 HF(g) -> SiF4(g)+2 H2O(l) nonspontaneous.T=298 K
calculate delta sdeg univ for the following reaction determine if spontaneous or nonspontaneous t298k sio2s4hfg sif4g2h2ol sio2s4 hfg sif4g2 h2ol nonspontaneoust298 k 96624

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Chemistry: Structure and Properties
Chemistry: Structure and Properties
Nivaldo Tro 2nd Edition
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Calculate Delta Sdeg univ for the following reaction. Determine if spontaneous or nonspontaneous. T=298K SiO2(s)+4HF(g)->SiF4(g)+2H2O(l) SiO2(s)+4 HF(g) -> SiF4(g)+2 H2O(l) nonspontaneous.T=298 K
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Transcript

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00:01 The first chemical reaction is 2pbs solid reacting with 3o2 as a gas to produce 2pbo solid and 2so2 gas.
00:27 Delta g can be calculated by taking delta h, negative 844 kj, and subtracting off t delta s.
00:39 T is 298 kelvin and delta s is negative 165 joules per kelvin.
00:48 Because this is in kj, we need to convert our delta s into kj.
00:52 Negative 165 is negative 0 .165 kj per kelvin and we get negative 794 .8 kj.
01:10 Because it's negative, it is spontaneous.
01:18 For the second reaction, we have 2pocl3 as a gas decomposing into 2pcl3 as a gas plus o2 as a gas.
01:36 Delta g standard can be calculated by taking delta h standard, that is positive 572 kj, subtracting off 298, our kelvin temperature, times delta s.
01:55 Delta s again needs to be converted into kj per kelvin...
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