PART I Phosphorous acid, H3PO3(aq), is a diprotic oxyacid that is an important compound in industry and agriculture. A flask contains 45 ml of H3PO3(aq) A titration is carried out and analysis of the data showed that the first equivalence point was reached after 33 ml of 0.50 M NaOH was added to the acid solution. Answer the following questions: What was the initial concentration in M of [H3PO3], the phosphorous acid solution

i believe that it is a exoplanet

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