E6db50-4c3f-4330-a
Changes in Ecosystems
4
In a local town, many people have been seen dumping used motor oil onto the ground. The
the oil cause any pollution?
OA. No, if you can't see the oil after it is dumped, nothing is polluted.
О В.
No, oil came from the ground in the first place, so it is okay to return it to the ground.
OC.
Yes, everything poured onto the ground is pollution
OD
Yes, the oil could pollute the groundwater.
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Ответ:
The pH of the solution lies from 11 to 12.Hence, option e is correct.
Explanation:
The value of
for caffine = 
Initial
0 0.01 M 0
AT equilibrium:
x (0.01 -x)M x
Solving for x:
x = 0.0096 M
The pOH of the solution is given by :
pOH = 2.02
pH= 14 - pOH = 14 - 2.02 = 11.98
The pH of the solution lies from 11 to 12.