Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

In a locality, hard water, required for an experiment, is not available. However, the following salts are available in the school laboratory: 1. Sodium

sulphate 2. Calcium sulphate 3. Magnesium chloride 4. Sodium chloride 5. Calcium chloride 6. Potassium sulphate Which of the above salts may be dissolved in water to obtain hard water for the experiment? (A) 2, 3 and 5 (B) 1, 2 and 5 (C) 1, 2, 4 and 6 (D) 3 and 5 only


A is the answer because hard water is of calcium and magnesium salt of carboxylic acid
0 0 0
Option A is correct
the salts of calcium and magnesium make water hard

hope this helps you
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts