Calculate the ph at the equivalence point for the titration of 0.230 m methylamine (ch3nh2) with 0.230 m hcl. the kb of methylamine is 5.0× 10–4.

The pH at the equivalence point for the titration will be 0.65.

Solution:

Let the concentration of be x

Initial concentration of , c = 0.230 M

at eq'm  c-x                         x                    x

Expression of :

Since ,methyl-amine is a weak base,c>>x so .

Solving for x, we get:

Given, HCl with 0.230 M , it dissociates fully in water which means = 0.230 M

will result in neutral solution, since

Remaining after neutralizing ions

The pH at the equivalence point for the titration will be 0.65.

possibly, yes.

explanation:

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in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: