Currently, co2 is being studied as a source of carbon atoms for synthesizing organic compounds. one possible reaction involves the conversion of co2 to methanol, ch3oh. co2(g)+3h2(g)→ch3oh(g)+h2o(g) with the aid of the following data, answer the following questions. δfh∘[ch3oh(g)] = -200.7 kj/mol δfh∘[h2o(g)] = -241.8 kj/mol δfh∘[co2(g)] = -393.4 kj/mol δfh∘[h2(g)] = 0.00 kj/mol δs∘[ch3oh(g)] = 239.8 j⋅mol−1⋅k−1 δs∘[h2o(g)] = 188.8 j⋅mol−1⋅k−1 δs∘[co2(g)] = -213.7 j⋅mol−1⋅k−1 δs∘[h2(g)] = 130.7 j⋅mol−1⋅k−1 you may want to reference (page) section 13.1 while completing this problem.

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml