Practice Removal Of Hardness (3.8) - Water

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9 questions

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6 sample questions

Question 1.
What is temporary hardness caused by?
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Think about what can be easily removed by boiling.
Question 2.
What is the purpose of washing soda in hard water?
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Remember, it helps in softening hard water.
3Question 3.
What type of hardness can be removed by boiling?
- Permanent
- Temporary
- Both
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Recall which hardness type is associated with bicarbonates.
4Question 4.
True or False: Washing soda can only remove temporary hardness.
- True
- False
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Think about all the types of hardness it addresses.
Question 5.
You have a water supply with 200 mg/L of calcium and 100 mg/L of magnesium. Determine the concentration of hardness in mg/L and suggest the methods to treat this water.
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Consider how boiling affects the bicarbonate while calculating total hardness.
Question 6.
Evaluate the effectiveness of using only boiling for a water supply that has both types of hardness and discuss the reasoning.
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Reflect on the differences between the types of hardness and the methods available.

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