1. Tardigrade
  2. Question
  3. Chemistry
  4. For the ionisation reaction- (( textRNH)2)( textg)+( textH)2( textO)( textitl)leftharpoons( textRNH3+)( textaq)+(( textOH)-)(( textaq))( text K)e q( text= 8 x 10) text-6 Find the pH of a solution at equilibrium when pressure of RNH2(g) is 0.5 bar :

Q. For the ionisation reaction-
$\left(\left(\text{RNH}\right)_{2}\right)_{\left(\text{g}\right)}+\left(\text{H}\right)_{2}\left(\text{O}\right)_{\left(\textit{l}\right)}\rightleftharpoons\left(\text{RNH}_{3}^{+}\right)_{\left(\text{aq}\right)}+\left(\left(\text{OH}\right)^{-}\right)_{\left(\left(\text{aq}\right)_{}\right)}\left(\text{ K}\right)_{e q}\left(\text{= 8 x 10}\right)^{\text{-6 }}$
Find the pH of a solution at equilibrium when pressure of RNH2(g) is 0.5 bar :

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Solution:

$8 \times 1 0^{- 6} = \frac{\text{x}^{2}}{\text{0.5}}$
$⇒ \, \, \text{x} = 2 \times 1 0^{- 3}$
$∴ \, \, \text{pOH} = \text{2.7}$
$\text{So, pH} = 11.3$

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