Adding an excess of clarified lime water to the sodium bicarbonate solution, the ionic equation of w

The ionic equation is: <>

When a small amount of clarified lime water is added, the ion equation is:

Calcium hydroxide. It is a white powdery solid. The chemical formula Ca(OH)2, commonly known as hydrated lime.

Eliminated lime, after adding water, is in two layers, the upper layer of aqueous solution is called clarified lime water, and the lower layer of suspension is called lime milk or lime slurry. The supernatant clarified lime water can be used to test for carbon dioxide.

The lower layer of cloudy liquid lime milk is a building material. Calcium hydroxide is a white powdery solid that is slightly soluble in water. Soluble in acid, ammonium salt, glycerol.

It is insoluble in water, insoluble in alcohol, and has a corrosive effect on ** and fabric. Industrial calcium hydroxide is called hydrated lime or slaked lime, and its clear aqueous solution is called lime water; An emulsion suspension composed of water is called lime milk. Due to its low level, hydroxide ions are used whenever they are needed.

It can be used to make bleaching powder and plaster for building materials, or for the softening of water.

Application: Calcium hydroxide has a wide range of uses in production and life. Bricks can be laid with hydrated lime mixed with sand, lime mortar can be used to paint the walls; Applying lime slurry containing sulfur powder, etc., to the trees protects the trees, prevents frostbite, and prevents pests from laying eggs; Preparation of triad soil; In agriculture, lime milk and copper sulfate solution are used to prepare Bordeaux liquid with bactericidal effect.

as a pesticide. Change the acidity and alkalinity of the soil: adding an appropriate amount of hydrated lime to the soil can neutralize the acidity, improve the acidic soil, and make it easy for crops to survive. Preparation of food additive sodium hydroxide and production of bleaching powder.

It can be used to produce calcium carbonate and epichlorohydrin.

Propylene oxide, bleaching powder, bleaching powder, disinfectant, antacid, astringent, hard water softener, soil acid prevention agent, depilatory agent, buffer agent, neutralizing agent, curing agent and drug, etc.; It is used in rubber and petrochemical additives, such as in lubricating oil in the petroleum industry, which can prevent coking, sludge deposition, neutralization and anti-corrosion.

But it's best to add up the two formulas.

Ca2++2OH-+2HCO3-=CAC3 presinks Qingdian +CO32-+2H2O (sufficient carbonic acid with a lack of sodium hydrogen.

Ca2++OH-+HCO3-=CaCO3 precipitation + H2O (a small amount of sodium bicarbonate).

Chemotensitized dermatologic mask high equation.

2nahco3 + ca(oh)2 = caco3 + na2co3 + 2h2o

The ionic anti-substance should be used as a ruler.

2hco3- +ca2+ +2oh- =caco3 + co32- +2h2o

The ionic equation for the reaction of clarified lime water and a small amount of sodium bicarbonate: HCO3-+OH-=CO32-+H2O.

Sodium bicarbonate is odorless, alkaline, and soluble in water. It slowly decomposes in moist or hot air to produce carbon dioxide, which is heated to 270 and loses all carbon dioxide. In case of acid, it decomposes strongly to produce carbon dioxide.

Sodium bicarbonate solids begin to gradually decompose above 50 to form sodium carbonate, water and carbon dioxide gas, and this property is often used as a leavening agent for making biscuits, pastries, steamed bread and bread. Sodium bicarbonate will remain sodium carbonate after action, and too much use will make the finished product have an alkaline taste.

Equation 1: HCO3-+OH-=CO32-+H2O

Equation 2: CO32-+CA2+=CAC3

If there is a small amount of sodium bicarbonate, there is a surplus of OH- and sodium hydroxide ions to generate calcium carbonate precipitation and sodium hydroxide ions: HCO3-+OH-+Ca2+=CaCO3 +H2O

HCO3-+Ca2++OH-=CAC3 +H2O, because it is clarified lime water, calcium hydroxide can be split.

Calcium carbonate, water, sodium hydroxide are generated.

Ca(OH)2+NaHCO3==CaCO3+NaOH+H2OCA2+ +OH- +HCO3- == CaCO3 + H2O (NaHCO3 in small amounts).

Ca(OH)2+2NaHCO3==CAC3+Na2CO3+2H2OCA2+ +2OH- +2HCO3- == CaCO3 + CO32- +H2O (NaHCO3 excess).

You can do this when writing equations.

A small amount is 1mol of the substance, and the excess amount required by another reactant is any amount of the substance, and the other reactant reacts all.

Ion Slow Talk Equation.

Sincerely, ca2+ +CO32-=caCO3

The chemical recipe is Ca(OH)2+Na2CO3=2NaOH+CaCO3

Na2CO3 + Ca(OH)2 = 2NaOH + CaCO3 precipitation will produce turbidity when dropped.

After Na2CO3 is consumed, CaCO3 precipitation is no longer produced.

However, it is easy to become a strong alkali solution of NaOH.

Drip into the clarified lime water will produce Ca(OH)2 turbidity.

Finally, it becomes a mixture of NaOH and Ca(OH)2.

2NaHCO3 + Ca(OH)2 (a small amount) ==CaCO3 precipitation is called next to fibrillosis +Na2CO3 + 2H2O

NaHCO3 + Ca(OH) Tongfang 2 (excess) ==CaCO3 precipitation + NaOH + H2O