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# help with the rates of reaction graph watch

1. I've drawn the graph plotting the concentration of h2 o2 again time in seconds on the y and x axis
I need to dint eh rate of reaction at 0 seconds when the h2 o2 has decrease to half of its value(or half life o think don't hold me to it), I've got as far as the tangents and calculating it's gradient however the results is 0.001? (0.167/150) is that yroght or have I messed up?
2. (Original post by DarkIronsBarzakh)

I've drawn the graph plotting the concentration of h2 o2 again time in seconds on the y and x axis
I need to dint eh rate of reaction at 0 seconds when the h2 o2 has decrease to half of its value(or half life o think don't hold me to it), I've got as far as the tangents and calculating it's gradient however the results is 0.001? (0.167/150) is that yroght or have I messed up?
Initial rate of reaction is just the gradient of the tangent to the curve at x=0
3. So it would be the results I got?

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