Chemistry Practice Problems Instantaneous Rate of Change Practice Problems Solution: The isomerization of methyl isonitrile (CH3NC) to ...

Solution: 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.

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)
00.0165
20000.0110
50000.00591
80000.00314
120000.00137
150000.00074


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

Solution

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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