The enzyme "catalase" catalyzes the decomposition of hydrogen peroxide by the exothermic reaction:
H2O2 (aq) → H2O (l) + ½ O2 (g)
Estimate the minimum detectable concentration of hydrogen peroxide if a small amount of catalase (a solid) is added to a hydrogen peroxide aqueous solution in a calorimeter. Assume that a temperature rise of 0.02°C can be distinguished. You can use a heat capacity of 4.184 kJ kg⁻¹ K⁻¹ for the hydrogen peroxide solution.

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

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

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