Answer:
pH = 1.6
Explanation:
- HF + H2O ↔ H3O+ + F-
- 2H2O ↔ H3O+ + OH-
- Ka = ( [ H3O+ ] * [ F- ] ) / [ HF ]
mass balance:
1 M = [ HF ] + [ F- ].........(1)
charge balance:
[ H3O+ ] = [ F- ] + [ OH- ]......[ OH- ] : comes from water, therefore it is negligible.
⇒ [ H3O+ ] = [ F- ]...........(2)
(2) in (1):
1 M = [ HF ] + [ H3O+ ]
⇒ [ HF ] = 1 - [ H3O+ ].........(3)
(2) and (3) in Ka:
⇒ Ka = [ H3O+ ]² / ( 1 - [ H3O+ ] )
∴ Ka = 7.0 E-4.......from literature
⇒ [ H3O+ ]² + 7.0 E-4[ H3O+ ] - 7.0 E-4 = 0
⇒ [ H3O+ ] = 0.0261 M
⇒ pH = 1.6
There is no definite answer but scientists believe the of you go closer towards the earth's core it can get extremely hot.
I think the answer is hmmm I think
