The isomerization of methylisonitrile to acetonitrilech3nc(g)→ch3cn(g)is first order in ch3nc . the rate constant for the reaction is 2.34×10−4 s−1 at 489 k .the half-life of the reaction when the initial {\rm [ch_3nc]} is 0.030 m is {\rm s}.a. 1.43×105b. 3.37×10−4c. 4.28×103d. 2.14×103e. 2.96×103

Option E, Half life =

Explanation:

For a first order reaction, rate constant and half-life is related as:

Where,

= Half life

k = Rate constant

Rate constant given =

So, the correct option is option E.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.