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1. There are a lot of phosphoric acid root. They may produce phosphate precipitate with calcium. But this kind of newly generated precipitation kernel can be solute by EDTA with fully mixing in a short time. So the placement time should not be too long, otherwise it will lead to the result on the low side.
2. When magnesium sample is high, it should be diluted to 80-150 ml solution volume before adding the alkaline. The basicity should be controlled as an appropriate value at PH12.5 in order to reduce absorption of calcium by magnesium hydroxide, leading to the magnesium increase.
3. Use quantitative starch with high calcium and magnesium for usage.
4. When there is a heavy metal in the sample, use sodium cyanide for masking in titration.
What else can I help you with?
Use the periodic table to answer this question. Decomposing calcium carbonate yields calcium oxide and carbon dioxide. What information is needed to calculate the mass of calcium oxide that can be pro?
To calculate the mass of calcium oxide produced from the decomposition of calcium carbonate, you need the molar masses of calcium carbonate (CaCO₃) and calcium oxide (CaO). Additionally, you must know the amount (in grams or moles) of calcium carbonate you are starting with. Using stoichiometry from the balanced chemical equation, you can determine the mass of calcium oxide that can be produced.
What information is needed to calculate the mass of calcium oxide that can be produced from 4.7 kg of calcium carbonate?
To calculate the mass of calcium oxide that can be produced from 4.7 kg of calcium carbonate, you need the molar masses of both calcium carbonate (CaCO₃) and calcium oxide (CaO). Additionally, you need to know the balanced chemical equation for the decomposition of calcium carbonate, which is: CaCO₃ → CaO + CO₂. Using this information, you can determine the moles of calcium carbonate and then use stoichiometry to find the corresponding mass of calcium oxide produced.
How many moles of calcium oxide are produced when 36.5 g of calcium react completely with oxygen gas?
.913 moles
What method of extraction would be used for calcium?
Calcium is typically extracted using electrolysis of molten calcium chloride (CaCl₂) or through the reduction of calcium oxide (CaO) with aluminum in a process known as aluminothermic reduction. The electrolysis method involves heating calcium chloride until it melts and then applying an electric current to separate calcium from chlorine. Alternatively, the aluminothermic method involves reacting calcium oxide with aluminum at high temperatures to yield calcium metal and aluminum oxide.
How can sulfur dioxide be removed using calcium oxide?
Sulfur dioxide can be removed by scrubbing the gas with a solution of calcium oxide. The calcium oxide reacts with sulfur dioxide to form calcium sulfite, which can then be further oxidized to calcium sulfate. This process helps to reduce the concentration of sulfur dioxide in the gas stream.
How does the limestone cycle work?
Starts off as Calcium Carbonate , when heated the calcium carbonate becomes Calcium Oxide + Carbon Dioxide, the Calcium Oxide then reacts with water to produce Calcium Hydroxide and then when more water is added then filtered it becomes Calcium Hydroxide Solution, C02 is then added to form Calcium Carbonate again [:
What are the methods of calcium extraction?
Some common methods of calcium extraction include electrolysis, using a blast furnace with coke, and the reduction of calcium oxide using aluminum in a thermite reaction. These methods are used to extract calcium from its various ores or compounds.
What are the considerations regarding not using WINS?
What are the "considerations" regarding not using WINS?
Why is calcium used in cement?
As Calcium Has been used for Building Purpose And For the Similar purpose it is Using IN Cement Which Depend upon its Bonding Property.It Actually react with Water in the Presence of Sesqui oxide(oxygen with Cation in (3:2) ratio) and form a Complex Compound With water of Crystalline Which have A power to hold the Material and So called cement.
What does scandium obtained from?
Scandium is usually found with rare earth and uranium compounds. One by-product of these metals is scandium oxide (Sc2O3) and it usually traded in this form. To obtain metallic scandium, the oxide is first converted to a fluoride and then reduced using calcium.
Do self heating cans warm up their contents using an exothermic or endothermic reaction?
Self-heating cans warm up their contents using an exothermic reaction. This reaction typically involves mixing water with quicklime (calcium oxide), which generates heat as it reacts to form calcium hydroxide.
What is the chemical name of cobalt oxide using the stock system?
Cobalt oxides are: cobalt(I) oxide, cobalt(II) oxide and cobalt(II,III) oxide.
