Ion exchange is used to remove water hardness of a well water, which has a total...
Ion exchange is used to remove water hardness of a well water, which has a total hardness of 450 mg/L as CaCO3. The ion exchanger has leakage hardness of 15 mg/L as CaCO3. The percentage of water that is bypassed and blended is 30%. What is the final water hardness in the finished or treated water most nearly?
A. 105 mg/L as CaCO3
B. 110 mg/L as CaCO3
C. 125 mg/L as CaCO3
D. 150 mg/L as CaCO3
Homework Answers
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Ion exchange is used to remove water hardness of a well water,
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A water sample has a total hardness of 275 mg/L as CaCO3 and a total alkalinity...
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Calculate the hardness of water in units of mg/L of Caco3 (see equation 15-7) if your titration a...
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5. When all of the sample to be collected has left the column, will the drop...
5. When all of the sample to be collected has left the
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6. How many H+ ions would be displaced from the ion
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7. Binding sites on the ion exchange resin are saturated
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8. Ions are displaced from the resin binding sites by
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Calculate the hardness of water in units of mg/L of Caco3 (see equation 15-7) if your titration at pH 10 resulted in a concentration of 15 mmol/L. Round your answer to the nearest whole number and enter only the numerical answer into the box. In most natural waters, some magnesium ion is present, so expressing water hardness in units of mg/L of CaCO3 is an arbitrary convention that has been adopted for the sake of convenience (or tradition). The conversion...
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M4. Water Softening Using Ion Exchange Method It is desired to remove Ca ions from water using ion exchange technique. For this purpose, water, initially containing 700 mg Ca2+/L, is passed through a column filled with sulphonated styrene-based cation exchange resin. The breakthrough curve of this ion exchange process is given in Figure 1. 141 a) Show the breakthrough point and also the point, where the exchange capacity of the resin is exhausted, on the same graph. [3] b) How...
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5. When all of the sample to be collected has left the
column, will the drop of solution coming off the tip of the column
be acidic, basic or neutral?
6. How many H+ ions would be displaced from the ion
exchange column by 1 Cu2+ ion?
7. Binding sites on the ion exchange resin are saturated
with which ion before the sample solution is added?
8. Ions are displaced from the resin binding sites by
any ion that has...
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