Problem: The isomerization of methyl isonitrile (CH3NC) to acetonitrile (CH3CN) was studied in the gas phase at 215 oC, and the following data were obtained:Time (s)[CH3NC] (M)00.016520000.011050000.0059180000.00314120000.00137150000.00074Solve graphically the instantaneous rate in M/s at t = 5000 s.

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We’re being asked to solve graphically the instantaneous rate in M/s at t = 5000 s based on the data for the isomerization of methyl isonitrile (CH3NC) to acetonitrile (CH3CN).


An instantaneous reaction rate is the rate at a particular moment in the reaction and is usually determined graphically and can be calculated as:


rate=  t

Δ[  ] = change in concentration
Δt = change in time


To do so, we will make a graph of the concentration of CH3CN in M (y-axis) vs. time in s (x-axis)

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Problem Details
The isomerization of methyl isonitrile (CH3NC) to acetonitrile (CH3CN) was studied in the gas phase at 215 oC, and the following data were obtained:


Time (s)[CH3NC] (M)
00.0165
20000.0110
50000.00591
80000.00314
120000.00137
150000.00074


Solve graphically the instantaneous rate in M/s at t = 5000 s.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Instantaneous Rate of Change concept. If you need more Instantaneous Rate of Change practice, you can also practice Instantaneous Rate of Change practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Deshmukh's class at UCSD.