2
$\begingroup$

I tried to get the formula of potassium ammonium sulfate. What I got is $\ce{K(NH4)2SO4}$ but I don't think this the right formula. I searched on the internet and found an answer ($\ce{KNH4SO4}$), but I don't think it is correct.

So what is the correct formula of potassium ammonium sulfate?

$\endgroup$
  • $\begingroup$ It would help if you explained your logic for why you think $\ce{K(NH4)SO4}$ is incorrect and why $\ce{K(NH4)2SO4}$ should be the answer. $\endgroup$ – Nicolau Saker Neto Jun 20 '14 at 16:17
  • 1
    $\begingroup$ your answer doesn't have zero net charge $+1(\ce K)+2(\ce{(NH4)2})-2(\ce{SO4})=1\ne0$ but $+1(\ce K)+1(\ce{NH4})-2(\ce{SO4})=0$ $\endgroup$ – RE60K Jun 20 '14 at 16:38
  • $\begingroup$ oh yes ! you are right ! I didn't pay attention for the net charge $\endgroup$ – Maher Jun 20 '14 at 17:27
7
$\begingroup$

$\ce{K(NH_4)SO_4}$ is the correct formula. You have two unipositive cations and a single dinegative anion. The total charge must be zero.

structural formula of the ionic compound

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.