The equivalent weight for an acid is the molar mass divided bh the number of moles H+ (for a base it is the molar mass divided by the number of moles of OH-) that enter a particular reaction. for the reaction given what is the equivalent weight for sulfurous acid?

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

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.