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
Answer:
Explanation:
The chemical equation of the reaction is as follows
According to the question, data provided in the question is shown below:
The C = Carbon and its standard state is Graphite C(s)
The H = Hydrogen and its standard state is 
(s)
The O = Oxygen and its standard state is 
(s)
Now the chemical equation for the reaction is
Three main radioactive elements are:
Uranium
Thorium
Radium
Answer:
190.4g
Explanation:
1.6mol of KBr (119.002g KBr/1 mol) = 190.4g
since you want to find grams, take the molar mass of KBr (119.002) per 1 mol and use it as your conversion factor (119.002g KBr/1 mol) which will then cancel out mols and leave you with grams.
