What is hardness caused by?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Prepare for the ADEQ Water Treatment 2 Exam with our comprehensive study tools including flashcards and multiple-choice questions. Each question is equipped with helpful hints and detailed explanations to ensure you're ready to excel on your exam day!

Multiple Choice

What is hardness caused by?

Explanation:
Hardness is caused by dissolved minerals, specifically the divalent metal cations calcium (Ca2+) and magnesium (Mg2+). These ions come from rocks and soils as water dissolves minerals, and their presence in water makes it hard. They interact with soap to form scum and promote scale on surfaces and pipes. Bacteria, organic matter, and nitrates affect other aspects of water quality, but they do not determine hardness. Hardness is commonly expressed as milligrams per liter as calcium carbonate (CaCO3).

Hardness is caused by dissolved minerals, specifically the divalent metal cations calcium (Ca2+) and magnesium (Mg2+). These ions come from rocks and soils as water dissolves minerals, and their presence in water makes it hard. They interact with soap to form scum and promote scale on surfaces and pipes. Bacteria, organic matter, and nitrates affect other aspects of water quality, but they do not determine hardness. Hardness is commonly expressed as milligrams per liter as calcium carbonate (CaCO3).

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy