3.7.1 - Hard Water
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What defines hard water?
💡 Hint: Think about what makes soap hard to use.
What type of hardness can be removed by boiling?
💡 Hint: Remember the method we discussed in class?
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What causes hard water?
💡 Hint: Think about the minerals present in hard water.
Temporary hardness can be removed by boiling.
💡 Hint: Recall the method for treating temporary hardness.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
You have a water sample with a hardness level of 300 mg/L of CaCO₃. You want to soften it to less than 60 mg/L. Calculate how much washing soda is needed to achieve this reduction for 100 liters.
💡 Hint: Calculate the amount based on the removal needed.
Explain how the presence of hard water could affect the lifespan of home appliances. Provide at least two examples.
💡 Hint: Think about why appliances with heating elements might be affected.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.