<p>1.Calculate the standard standard free energy change for
2CH3OH(g) + 3O2(g) >2CO2(g) + 4H2O(ℓ) at 25◦C.</p>
<p>this is a table for the value of each compounds and delta s, h and g.</p>
<pre><code> delta s delta h delta g
</code></pre>
<p>CH3OH(g) 239.81 −200.66 −161.96
O2(g) 205.14 0 0
CO2(g) 213.74 −393.51 −394.36
H2O(ℓ) 69.91 −285.83 −237.13</p>
<ol>
<li><p>Which of the compounds
I) PCl5(g);
II) NO(g);
III) HCN(g);
IV) SO2(g);
is/are unstable and will decompose into their
elements under standard conditions at 25◦C?</p>
<pre><code> delta h delta s delta g
</code></pre>
<p>PCl5(g) −374.9 364.6 −305.0
NO(g) 90.25 210.76 86.55
HCN(g) 135.1 201.78 124.7
SO2(g) −296.83 248.22 −300.19</p></li>
<li><p>I only</p></li>
<li><p>I, II and III only</p></li>
<li><p>Cannot be determined</p></li>
<li><p>II, III, and IV only</p></li>
<li><p>I, II and IV only</p></li>
<li><p>II and IV only</p></li>
<li><p>I and III only</p></li>
<li><p>III only</p></li>
<li><p>Another combination</p></li>
<li><p>II and III only</p></li>
<li><p>The equilibrium constant K for the reaction
2HgO(s) > 2Hg(ℓ) + O2(g)
is 1.2 </p></li>
</ol>