Apply the henderson-hasselbalch equation to calculate the ch3nh3'/ ch3nh2 ratio in water buffered at ph 7.

Explanation:

As we know that:-

For :-

pH = 7

Also, pH + pOH = 14  

So, pOH = 14 - 7 = 7

Considering the Henderson- Hasselbalch equation for the calculation of the pOH of the basic buffer solution as:

So,  

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm