Now let m react, and at time = 0, [m] = 0.102 m, a(545nm) = 0.491; at time = 30 seconds, a(545nm) = 0.404. what is the [m] at 30 seconds? what is the slope of the absorbance vs. [m] function? what is the (average) rate of the reaction during this time period.
if a new reaction was run leaving [n] the same, but beginning (time = 0) with [m] = 0.204 m, a(545nm) = 0.981. after 30 seconds, a (545 nm) is 0.807. what is the order of the reaction with respect to [m] ?

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Explanation:

The purpose of washing the organic layer with sodium bicarbonate solution is to

(to remove any of the unreacted benzoic acid).

Explanation:

Methyl benzoate is a typical example of an ester in organic chemistry. It is formed by the action of benzoic acid and methanol. Sulphuric acid is often used as a catalyst in this reaction.

The procedure for the preparation of the ester includes:

--> the acid and the alcohol are added into a round bottom flask,

--> concentrated sulphuric acid is added down the side of the flask,

--> a separatory funnel is used to extract the ester into an organic layer where sodium bicarbonate is added.

--> when the aqueous layer from the sodium bicarbonate wash is acidified with concentrated HCl, the unreacted benzoic acid should precipitate. This is how the unreacted benzoic acid is removed.