What polyatomic ion is responsible for reacting with magnesium or calcium to create hard water?
Yes,the polyatomic ions responsible for hardness of water are sulphates and bicarbonates.
What polyatomic ion is responsible for reacting with magnesium or calcium to create hard water?
Hard water often contains dissolved calcium ion and magnesium ions. One way to soften water is to add phosphate salts. The phosphate ion forms insoluble precipitates with calcium and magnesium ions, removing them from solution. Suppose that a solution is 5.5×10−2 M in calcium chloride and 9.5×10−2 M in magnesium nitrate. What mass of sodium phosphate would have to be added to 11.5 L of this solution to completely eliminate the hard water ions? (Assume complete reaction.)
What is the bond order for the polyatomic ion OF- Is this polyatomic ion paramagnetic or diamagnetic? How many sigma bonds and pi bonds does this polyatomic ion have? If you don't mind, I would love to see how you set up the diagram.
a) What is the bond order for the polyatomic ion OF- b) Is this polyatomic ion paramagnetic or diamagnetic? c) How many sigma bonds and pi bonds does this polyatomic ion have? If you don't mind, I would love to see how you set up the diagram
You are measuring the calcium concentration of a well to determine how hard the water is. Which of the following measurement methods should you use to get the concentration of the calcium in the water using a calcium ion selective electrode A standard additions curve A calibration curve Neither Both
1. Active metals reacting with water A. and B. Sodium and Potassium. Describe the reactions which you observed. What differences, if any, did you notice? Soolium:exPlosion fire occurned -exothrmic Potassium Fire no explosion -exother m Write a balanced chemical equation for each reaction. Sodium and water: Potassium and water: C and D. Magnesium and Calcium. Describe the reactions which you observed. Which m reacted more readily with water? How do you know? Calium, because it turned the saluhion pinl ulded...
Write a balanced chemical equation for each reaction. If no reaction occurred, write "N.R."): Magnesium and hydrochloric acid: Zine and hydrochloric acid: Copper and hydrochloric acid: 3. Metals reacting with a non-metal (oxygen); metal oxides reacting with water Write a balanced chemical equation for each reaction. Magnesium and oxygen: Calcium and oxygen What happened when magnesium oxide and calcium oxide were added to water containing phenol phthalein indicator? What differences, if any, did you observe? Turns basic Water turns Pince...
If the concentration of total calcium and magnesium in the Mississippi water is in the range of 3.5 mm, what is the concentration of these ions in mg/L? Show your work; atomic weight of Ca is 40.1 and that of Mg is 24.3. a) 90 mg/L b) 100 mg/L c) 120 mg/L d) 225 mg/L e) None of the above
Magnesium (Mg2+) makes water hard, which prevents soaps and detergents for working properly. Therefore, drinking water treatment plants use precipitation to reduce the concentration of magnesium in the treated water. What pH is required to reduce a high concentration of dissolved Mg2+ to 25 mg/L? The solubility product for the following reaction is 10−11.16: Mg(OH)2(s) = Mg2+(aq) + 2OH−(aq).
PRE-LABORATORY QUESTIONS, WATER: DETERMINING THE CONCENTRATION OF CALCIUM IONS IN WATER SAMPLES EXPT. SA HARD Prior to coming to lab, carefully read the entire experimental procedure that follows and write an outline of the procedure in your lab notebook IN YOUR OWN WORDS (do not simply copy). Then, add three tables for your titrations of the blank, tap water, and CaCl samples. Complete these problems and hand in gt the bexinning of the laboratory period. Show all work. EDTA is...
How does hard water affect a detergent? I answered a question similar to this but in regards to soap, and we're talking more of a biochem approach, so I mention the calcium and magnesium ions.