1) The rate constant for the gas-phase reaction H2(g) + I2(g) → 2 HI(g) has the value 4.45 × 10-5 mol-1 dm3 s-1. What is the equivalent rate constant in units of molecule-1 cm³ s- 1?

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1) The rate constant for the gas-phase reaction
H2(g) + I2(g) → 2 HI(g)
has the value 4.45 x 10-5 mol-1 dm³ s-1. What is the equivalent rate constant in units of molecule-1 cm³ s-
1?
2) The kinetics of the hydrolysis of methyl methanoate, CH3COOCH3, in aqueous solution were
investigated by measuring the concentration of the ester after different time intervals. The reaction was
found to be first order in the concentration of the ester. Use the data below to determine the rate constant
for the reaction (must provide best fit graph).
3600
time,
t/s
1800
5400
7200
9000
concentration,
c/ (mol dm-3)
0.300
0.191
0.135
0.081
0.055
0.035
Transcribed Image Text:1) The rate constant for the gas-phase reaction H2(g) + I2(g) → 2 HI(g) has the value 4.45 x 10-5 mol-1 dm³ s-1. What is the equivalent rate constant in units of molecule-1 cm³ s- 1? 2) The kinetics of the hydrolysis of methyl methanoate, CH3COOCH3, in aqueous solution were investigated by measuring the concentration of the ester after different time intervals. The reaction was found to be first order in the concentration of the ester. Use the data below to determine the rate constant for the reaction (must provide best fit graph). 3600 time, t/s 1800 5400 7200 9000 concentration, c/ (mol dm-3) 0.300 0.191 0.135 0.081 0.055 0.035
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