State the value, in mg of CaCO3/L that constitutes "hard" water.

Question

Question

State the value, in mg of CaCO3/L that constitutes "hard" water.

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

0 to 60 mg/L (milligrams per liter) as calcium carbonate is classified as soft; 61 to 120 mg/L as moderately hard; 121 to 180 mg/L as hard; and more than 180 mg/L as very hard.

Add a comment

Answer 2

Similar Homework Help Questions

1a.) From water sample, 10 mg/L HCO3- as CaCO3, 10 mg/L CO3- as CaCO3 and 50...

1a.) From water sample, 10 mg/L HCO3- as CaCO3, 10 mg/L CO3- as CaCO3 and 50 mg/L Ca+ as CaCO3 were measured. pH was near neutral. What is alkalinity? _____ mg/L as CaCO3 1b.) From water sample, 10 mg/L HCO3- as CaCO3, 10 mg/L CO3- as CaCO3 and 50 mg/L Ca+ as CaCO3 were measured. pH was near neutral. What is alkalinity? _____ mg/L as CaCO3 1c.) Calculate Ksp = _____ A2BO3 ->2A++ BO32- Molar concentration of A+ = Molar...
2. Determine the approximate alkalinity (in mg/L as CaCO3) for a water which has 127.3 mg/L...

2. Determine the approximate alkalinity (in mg/L as CaCO3) for a water which has 127.3 mg/L of bicarbonate ions and 18.5 mg/L of carbonate ions.
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.

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
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.
Determine the lime and soda ash dose, in mg/l as CaCO3, to soften the following water...

Determine the lime and soda ash dose, in mg/l as CaCO3, to soften the following water to a final hardness of 80 mg/l as CaCO3. The ion concentrations reported below are all in mg/l as CaCO3. Ca2+ = 120 Mg2+ = 30 HCO3- = 70 CO2 = 10

A water with a pH of 9.0 contains 20 mg/L CO3-2 and 55 mg/L HCO3-. Calculate the alkalinity of the water expressed as meq/L (milli equivalents per liter) and as mg/L as CaCO3.

A water with a pH of 9.0 contains 20 mg/L CO3-2 and 55 mg/L HCO3-. Calculate the alkalinity of the water expressed as meq/L (milli equivalents per liter) and as mg/L as CaCO3.
(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)...
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.

State the value, in mg of CaCO3/L that constitutes "hard" water.

Homework Answers

Add Answer to:
State the value, in mg of CaCO3/L that constitutes "hard" water.

Post as a guest

Earn Coins

1a.) From water sample, 10 mg/L HCO3- as CaCO3, 10 mg/L CO3- as CaCO3 and 50...

2. Determine the approximate alkalinity (in mg/L as CaCO3) for a water which has 127.3 mg/L...

Determine the hardness of this water in units of mg/L as CaCO3. Hardness is the sum...

A water sample has a total hardness of 275 mg/L as CaCO3 and a total alkalinity...

Question about Hardness of Water: You have a water with CaCO3 content of 15000 mg/L. Calculate...

Determine the lime and soda ash dose, in mg/l as CaCO3, to soften the following water...

A water with a pH of 9.0 contains 20 mg/L CO3-2 and 55 mg/L HCO3-. Calculate the alkalinity of the water expressed as meq/L (milli equivalents per liter) and as mg/L as CaCO3.

(35 points) For the following water sample please complete the table (meq/L and mg/L as CaCO3) and the questions that f...

You have a water with CaCO3 content of 201.7 mg/L. Calculate how much calcium chloride or...

The total hardness a water sample is 200 mg/l as CaCO3. The calcium (Ca2+) concentration is...

State the value, in mg of CaCO3/L that constitutes "hard" water.

Homework Answers

Add Answer to: State the value, in mg of CaCO3/L that constitutes "hard" water.

Post as a guest

Earn Coins

Add Answer to:
State the value, in mg of CaCO3/L that constitutes "hard" water.