How will you test in the laboratory, whether the given sample of water is hard or soft?(Delhi - 2011)
Answers
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0
Answer:
If water form lather (foam ) with soap so it is soft water
Explanation:
when water form scom then it is hard water
Answered by
1
Test to identify the water sample as Hard or soft
Explanation:
- The following are the steps to conduct the test:
Step 1: Take 5 to 10 ml of the given water sample in the beaker.
Step 2: To the sample add 2 ml of soap solution.
Step 3: Shake the content and note the observation.
- The principle involved in the given concept is that, soft water forms foam with soft solution whereas hard water forms scum with the soap solution.
- When in the beaker if the foam is formed, the given water sample will be inferred as soft.
- On the other hand, if the scum is formed, the given water sample will be inferred as hard.
- In this way, I will test in the laboratory whether the given sample of water is hard or soft.
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