Variation of Temperature Step 2: Measure the Reaction Rate at ≈ 20°C (Room Temperature)
Step 3: Measure the Reaction Rate at ≈ 40°C
Step 4: Repeat Step 2, heating the water to Measure the Reaction Rate at ≈ 65°C
Step 5: Measure the Reaction Rate at ≈ 5°C

Variation of Particle Size
Step 6: Measure the Reaction Rate for a Full Tablet
Step 7: Measure the Reaction Rate for a Partially Broken Tablet
Step 8: Measure the Reaction Rate for a Crushed Tablet

Table A: Variation of Temperature

≈ 20°C241,0000.234.2    36

≈ 40C401,0000.226.3   146

≈ 65C651,0000.214.2    190

≈ 5°C31,0000.2138.5  352

Table B: Variation of Particle Size

large1,0000.234.5    145

medium1,0000.228.9   173

small1,0000.223.1    216

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