Question about Hardness of Water: You have a water with CaCO3 content of 15000 mg/L. Calculate...
Question about Hardness of Water:
You have a water with CaCO3 content of 15000 mg/L. Calculate how much calcium chloride or distilled water would be needed to decrease CaCO3 content to 100 mg/L.
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Question about Hardness of Water:
You have a water with CaCO3 content of 15000 mg/L. Calculate...
You have a water with CaCO3 content of 201.7 mg/L. Calculate how much calcium chloride or...
You have a water with CaCO3 content of 201.7 mg/L. Calculate how much calcium chloride or distilled water would be needed to increase CaCO3 content to 250 mg/L.
The total hardness a water sample is 200 mg/l as CaCO3. The calcium (Ca2+) concentration is...
The total hardness a water sample is 200 mg/l as CaCO3. The calcium (Ca2+) concentration is 50 mg/l. Calculate the magnesium (Mg2+) concentration, in mg/l.
Determine the hardness of this water in units of mg/L as CaCO3. Hardness is the sum...
Determine the hardness of this water in units of mg/L as CaCO3. Hardness is the sum of the concentrations of multivalent cations in the water, which in this case include Ca (as Ca2+) and Mg (as Mg2+). Hardness is expressed in “equivalent” units or “CaCO3” units.
Calculate the hardness of water in units of mg/L of Caco3 (see equation 15-7) if your titration a...
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...
A water sample has a total hardness of 275 mg/L as CaCO3 and a total alkalinity...
A water sample has a total hardness of 275 mg/L as CaCO3 and a total alkalinity of 320 mg/L as CaCO3. What are the carbonate and non-carbonate hardness (in mg/L as CaCo2) of the water sample? Use the relationship when alkalinity < total hardness, carbonate hardness(mg/L) - alkalinity(mg/L) and when alkalinity >/= total hardness Carbonate hardness(mg/L) -totalk hardness(mg/L) if necessary
Calculate the hardness of a water sample containing Ca 2+ 60 mg/L, Mg 2+ 30 mg/L...
Calculate the hardness of a water sample containing Ca 2+ 60 mg/L, Mg 2+ 30 mg/L and HCO3- 366 mg/L and 17 mg/L of CO3= at a pH of 9.8.. Calculate the total hardness in terms of calcium carbonate.
How much soda ash (Na2CO3) in kg/day do you need to add to remove calcium hardness...
How much soda ash (Na2CO3) in kg/day do you need to add to remove calcium hardness from 200 mg/L CaCO3 to 50 mg/L CaCO3 if you have a water source with flowrate of 1000 m3/day. Consider the following unbalanced reaction that describes the process of Ca2+ removal. Ca2+ + Na2CO3 ↔ CaCO3↓ + Na+ Considering the soda ash has 96% purity and it costs $0.5/kg, how much would it cost the water treatment plant per year (365 days)?
(35 points) For the following water sample please complete the table (meq/L and mg/L as CaCO3) and the questions that f...
(35 points) For the following water sample please complete the table (meq/L and mg/L as CaCO3) and the questions that follow (Remember - 50 mg CaCO3/meq CaCO3) lon mg/L mg/meq meq/L (Please fill in the values below) as CaCO3 mg/L HCO3 125 61.0 2- 35 250 30.0 Mg K* Fe2 Mn2+ SO.2 NO3 NO2 Ca2 12.2 100 39.1 27.9 175 12 27.5 300 48.0 62.0 2 0.1 46.0 155 125 20.0 CI Na* 35.5 25 23.0 pH 7.0 (15 points)...
#1 A water sample contains 60 mg/L of calcium, 60 mg/L of magnesium, and 25 mg/L...
#1 A water sample contains 60 mg/L of calcium, 60 mg/L of magnesium, and 25 mg/L of sodium. Assuming the alkalinity of the water is 394 mg/L CaCO3. Estimate Total Hardness, Carbonate Hardness, and Noncarbonate Hardness using all polyvalent cations. #2 What is the % error using only the predominant cations? #3 Construct a bar chart to determine the speciation of the hardness
#1 [5 pts) A water sample contains 60 mg/L of calcium, 60 mg/L of magnesium, and...
#1 [5 pts) A water sample contains 60 mg/L of calcium, 60 mg/L of magnesium, and 25 mg/L of sodium. Assuming the alkalinity of the water is 394 mg/L CaCO3. Estimate Total Hardness, Carbonate Hardness, and Noncarbonate Hardness using all polyvalent cations.
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...
(35 points) For the following water sample please complete the table (meq/L and mg/L as CaCO3) and the questions that follow (Remember - 50 mg CaCO3/meq CaCO3) lon mg/L mg/meq meq/L (Please fill in the values below) as CaCO3 mg/L HCO3 125 61.0 2- 35 250 30.0 Mg K* Fe2 Mn2+ SO.2 NO3 NO2 Ca2 12.2 100 39.1 27.9 175 12 27.5 300 48.0 62.0 2 0.1 46.0 155 125 20.0 CI Na* 35.5 25 23.0 pH 7.0 (15 points)...
#1 [5 pts) A water sample contains 60 mg/L of calcium, 60 mg/L of magnesium, and 25 mg/L of sodium. Assuming the alkalinity of the water is 394 mg/L CaCO3. Estimate Total Hardness, Carbonate Hardness, and Noncarbonate Hardness using all polyvalent cations.
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