Chemistry Kinetics

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If I had the equation

H2 + I2 --> 2HI

could I write the rate of reaction as

d[H2 + I2]/dt = k[H2]^x[I2]^y
were x is the order of reaction with respect to x and y is just the order of reaction with respect to y

thanks

  • Chemistry Kinetics -

    well i guess I need the negative sense it's the reactant

    -d[H2 + I2]/dt = k[H2]^x[I2]^y

    is this correct?

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