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Can you use sodium chloride rather than calcium chloride in fresh water swimming pool for hardness?
No, because it's not the chloride part that's responsible for the hardness, it's the calcium. Sodium chloride is actually used in water softeners, so it's not a great choice if you're looking to increase the hardness. You could use calcium hydroxide, though this will also make the pool more alkaline which may not be ideal.
What else can I help you with?
Is CaCl2 made up of molecules?
No. It is an ionic compound. It is made of ions.
The hardness of water is a measurement of how acidic it is?
The hardness of water is actually a measurement of the mineral content in water, specifically the amount of calcium and magnesium ions present. It is not a measure of acidity but rather refers to the ability of water to form scale or soap scum.
Why do you use hydrochloric acid to separate calcium carbonate from sand but not sulphuric acid?
Hydrochloric acid reacts with calcium carbonate to form calcium chloride, carbon dioxide gas, and water, which helps dissolve the calcium carbonate. On the other hand, sulfuric acid does not react with calcium carbonate as effectively as hydrochloric acid, making it less efficient for separating calcium carbonate from sand.
Why hardness is always calculated in terms of caco3?
Hard water is a mixture of calcium, magnesium, and bicarbonate, sulphate, chloride, etc. Hardness of water is expressed in units of mg CaCO3 / L as if all calcium and magnesium were formed as CaCO3. This unit is how many mg of CaCO3 would precipitate per liter of hard water.
Why does it become watery white when calcium chloride and sodium carbonate was mixed?
When concentrated aqueous solutions of calcium chloride and sodium carbonate are mixed, the concentrations of carbonate and calcium ions greatly exceed the solubility product constant of calcium carbonate. If the two solutions are mixed quickly, this formation of a solid product occurs almost instantly throughout the mixture, and so many crystals of calcium carbonate are nucleated that each one can not grow beyond colloidal size, because growth soon reaches a point where the ion concentrations are no longer large enough, the ions having been used up to form other crystals. Since the crystals are so small, they remain dispersed in the mixture, turning it milky white, rather than collecting at the bottom of the container as most precipitates do.
Why calcium is obtained by electrolysis of molten calcium chloride rather than its solution?
if done in water solution, the extracted calcium would immediately react with the water to form calcium hydroxide.
Is CaCl2 made up of molecules?
No. It is an ionic compound. It is made of ions.
What compound is formed from sodium bicarbonate and calcium chloride?
When calcium chloride dissolves, it is rather exothermic (which makes it a good deicer for sidewalks). After mixing: the sodium and chloride ions will remain in solution and do nothing. The bicarbonate and calcium will react in a strange way. Ca2+ + 2 HCO3- → CaCO3 + H2CO3 As the calcium carbonate drops out of solution, the equilibrium of this reaction is further driven off to the right thus creating more carbonic acid. Carbonic acid easily decomposed to form water and carbon dioxide. H2CO3 → H20 + CO2 So, when you mix calcium carbonate and sodium bicarb, you get: Carbon dioxide gas, calcium carbonate solid, water and sodium and chloride ions.
What is the chemical formula for CaCLCL?
If you were trying to write CaCl2, then that is the formula.If you wanted the name (of what I wrote, not the nonsense you wrote) then it would be calcium chloride. I suppose technically you could say calcium (II) chloride, but that would be rather pedantic; oxidation states for calcium other than +2 are so rare that the oxidation state is usually only specified when it's something other than +2.
The hardness of water is a measurement of how acidic it is?
The hardness of water is actually a measurement of the mineral content in water, specifically the amount of calcium and magnesium ions present. It is not a measure of acidity but rather refers to the ability of water to form scale or soap scum.
Why do you use hydrochloric acid to separate calcium carbonate from sand but not sulphuric acid?
Hydrochloric acid reacts with calcium carbonate to form calcium chloride, carbon dioxide gas, and water, which helps dissolve the calcium carbonate. On the other hand, sulfuric acid does not react with calcium carbonate as effectively as hydrochloric acid, making it less efficient for separating calcium carbonate from sand.
Why hardness is always calculated in terms of caco3?
Hard water is a mixture of calcium, magnesium, and bicarbonate, sulphate, chloride, etc. Hardness of water is expressed in units of mg CaCO3 / L as if all calcium and magnesium were formed as CaCO3. This unit is how many mg of CaCO3 would precipitate per liter of hard water.
How many moles of calcium are in 15.5 g calcium chloride?
If grams/molar mass=moles, then first the molar mass of the compound must be found. CaCl2 has a molar mass of 110.984. Divide the number of grams, 15.5, by 110.984, and you get the number of moles. Now, seeing as calcium is not diatomic like oxygen or chlorine, there needs to be no conversion between the number of moles of calcium in the compound and the number of moles of calcium outside of the compound. atoms, the number of calcium atoms in the compound divided by one mole of the compound will give us the ratio. Conveniently enough, that ratio is one calcium atom per molecule of calcium chloride, meaning that for every one mole of calcium chloride, 1 mole of pure calcium can be extracted. So once you find the number of mole of CaCl2, that is the number of moles of calcium as well. This may be a little difficult to grasp, but I'm sure that your teacher, if you're a student, will be able to explain why rather well.
Why is there a decrease in mass when calcium carbonate reacts with hydrochloric acid?
When calcium carbonate reacts with hydrochloric acid, it forms calcium chloride, carbon dioxide, and water. The carbon dioxide gas is released into the atmosphere, causing a decrease in mass because it escapes as a gas rather than remaining in the solid form of calcium carbonate.
Why does it become watery white when calcium chloride and sodium carbonate was mixed?
When concentrated aqueous solutions of calcium chloride and sodium carbonate are mixed, the concentrations of carbonate and calcium ions greatly exceed the solubility product constant of calcium carbonate. If the two solutions are mixed quickly, this formation of a solid product occurs almost instantly throughout the mixture, and so many crystals of calcium carbonate are nucleated that each one can not grow beyond colloidal size, because growth soon reaches a point where the ion concentrations are no longer large enough, the ions having been used up to form other crystals. Since the crystals are so small, they remain dispersed in the mixture, turning it milky white, rather than collecting at the bottom of the container as most precipitates do.
What is pH value of Calcium Chloride when dissolved in water?
As HCl is a strong acid and 2 moles of it are reacting with only one mole of a weak acid which is Ca(OH)2 we can logically say the pH of CaCl2 will be an acidic one Thus when dissolving in water the pH will become <7
The hardness of iron?
It's actually a rather difficult question to answer as iron can be forged in a number of different ways, each giving a different hardness. I've attached a link to a site giving different hardness values for some treatments of grey iron.
