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The dissolution of a solid in water

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I) At 25ºC, 0.212g of barium hydroxide is dissolved completely in sufficient water to make 0.25 liter of final solution. What is the hydroxide ion concentration in mol litre-1? Given answer in scientific notation to an appropriate number of significant figures.

ii) What assumption must you make in order to carry out the calculation?

iii) What is the hydrogen ion concentration (in mol liter-1) in the solution?

iv) What is the PH of this solution to the nearest integer?

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Solution Summary

The dissolution of a solid in water is examined. The assumption which must be used to order to carry out calculations are given.

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Here is some pointers you want to think about if you want to try to solve this by yourself:

To find the concentration we need to know two things:
1. How many moles of OH-1 are present in the final solution
2. How many liters of water are required in order to dissolve completely BaOH2.
Part 2 is essential, since we need to know if to get to 0.25L of solution we need to add ...

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