If 100 ml of water requires 5 ml of 0.05 N, EDTA, its hardness is
(a) 200 mg/l
(b) 250 mg/l
(c) 260 mg/
(d) 125 mg/
Answers
Answered by
12
Answer:
hey dear
b is correct option .
250 mg / l
hope it's helpful for you.
Answered by
0
Answer:
The hardness is 125mg/l.
Explanation:
Milliequivalent of EDTA = 5×0.05
Meq. = 0.25
Therefore, Meq of water = 0.25
We know that milliequivalent weight is given by dividing the weight by equivalent weight. Therefore,
Weight of water = milliequivalent × equivalent weight
Weight of water =
Weight of water = 0.0125
Weight of water = 1.25×10⁻²
Now,
Hardness =
Hardness =
Hardness = 1.25×10²
Hardness = 125mg/l
Therefore, the hardness of water is 125mg/l
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