[toetoe]

hi,

i will be happy if somebody helps me to correct my answers :

we have , Pka(HCOOH/HCOO^-) = 3.8,Pka(C2H5NH4⁺/C2H5NH2)= 10.7 .

a)can HCOOH and C2H5NH2 be the dominating chimical types at the same time ?
My answer : No,because there is no intersection between their intervals of predominance .

b) deduce the reaction that will happen when we put both of HCOOH and C2H5NH2 in the same watter.
my answer : C2H5NH2 + HCOOH -> (HCOO^-) + (C2H5NH4⁺)

thanks in advance

[AWK]

Should be:
C2H₅NH₃⁺

[toetoe]

yes  of course, i just didn't know how to write C2H5NH3⁺ .but are the answers right ,please?

[AWK]

What do you mean by term; "at the same time"?

[toetoe]

i mean that we put HCOOH and C2H5NH2 together in some water ."at the same time" doesn't have a great importance ,you can omit it .

[Yggdrasil]

The answers sould alright to me.

[AWK]

i mean that we put HCOOH and C2H5NH2 together in some water ."at the same time" doesn't have a great importance ,you can omit it .

When you mix in equimolar ratio the formic acid and the ethylamine in water, the dominating forms will be HCOO^- and C₂H₅NH₃⁺.

[toetoe]

thank you for your answers.