Determine the homolytic C-H bond strength in CH3OH employing the following data.

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kidvideo90
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DfH (CH3OH) = -201.6 kJ mol-1
DfH (H) = 218 kJ mol-1
DfH (HBr) = -36 kJ mol-1
DfH (Br) = 111.9 kJ mol-1
CH3OH + Br  CH2OH + HBr k(300K) = 1 x 106 M-1s-1; k(350K) = 4 x 108 M-1s-1
CH2OH + HBr  CH3OH + Br k(300K) = 1 x 107 M-1s-1; k(350K) = 7.7 x 108 M-1s-1

Any help would be appreciated, I just can't figure out how to even start this problem. Thanks in advance
 
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Use the rate data to correlate with the temperature data and find the enthalpy of the reaction for the two equations.

Write the homolytic dissociation equation. Also clarify the subscripts.