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How Many Liters are in a Gallon
If 1 litre of 2.2M sulphuric acid is poured into a bucket containing 10 litres of water, and the resulting solution mixed thoroughly, the resulting sulphuric acid concentration will be…
A. 2.2 M
B. 1.1 M
C. 0.22 M
D. 0.11 M
2.2M = 2.2mol/dm-cube
this simply means 2.2moles of sulphuric acid is present in 1 dm-cube of the solution, or 2.2moles of sulphuric acid is present in 1 liter of the solution.
So, 1 litre of 2.2M sulphuric acid contains 2.2 moles of sulphuric acid,
If this is poured into 10 liters of water, the new concentration will be:
2.2moles/10liters = 0.22mol/liter or 0.22M
Now for the right answer to the above question:
- Option A is incorrect.
- Option B is incorrect.
- C is correct.
- D is not the correct answer.
You may please note these/this:
- Concentration of an acid is simply the quantity of the molecules of the acid, in moles, present in one liter of water.
- Simple understanding and use of units can help in arriving at the right answer.
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/ culled from 2018 JAMB-UTME Chemistry question 2 /