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1. First of all, sodium bicarbonate.
It is an amphoteric compound, both basic and acidic, so it can be combined with soluble barium salts (such as Ba(OH)2).
and soluble calcium salts (e.g., Ca(OH)2). and sodium carbonate.
It is a slightly basic compound that can also react with the above two substances, which meets the conditions for the formation of precipitate.
2. Sodium bicarbonate and calcium hydroxide.
There are two scenarios for the reaction
If sodium bicarbonate is sufficient, the following reactions occur:
2nahco3
ca(oh)2
caco3↓
na2co3
2H2O If the sodium bicarbonate is sufficient (i.e., the calcium hydroxide is sufficient), the following reactions occur:
nahco3
ca(oh)2
caco3↓
naohh2o
Assuming that the ratio of sodium bicarbonate to calcium hydroxide is 1:1, then you may wish to have.
Na+, HCO3-, Ca2+ all have only one, while OH- is two, and now reacts.
oh(-)hco3-
co3(2-)
h2oca(2+)
co3(2-)
caco3↓
OH (-) binds to Na+ as NaOH.
The above three formulas are added together and have a reaction.
nahco3
ca(oh)2
caco3↓
naohh2o
If sodium bicarbonate is sufficient, then.
Na+, HCO3- is more than enough and can continue to react with NaOH.
oh(-)hco3-
co3(2-)
H2O (OH- is consumed).
At the same time, Na+ with CO3 (2-).
Combined build. na2co3。
The above equations are added together to produce a reaction:
2nahco3
ca(oh)2
caco3↓
na2co3
2H2O again, for sodium bicarbonate with sodium hydroxide.
Because no matter what kind of excess can not continue to react with the product, there is only one case.
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Stand with your hands down. Pronunciation: chuí
shǒushì
lì Zhuyin:
Basic explanation: Put your hands down and stay by your side. Describe standing respectfully by the side, ready to follow orders at any time.
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It's better to work in jobs that increase your knowledge or learn a certain skill, and the pay is secondary. If you can learn more about society or master a skill to make a living than others in the summer, you will be at the starting point for college.
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Sodium bicarbonate reacts with hydrochloric acid to directly generate a large amount of gas (CO2): NaHCO3+HCl=NaCl+H2O+CO2
Sodium carbonate is not, and there are two cases:
1) If hydrochloric acid is dropped into the sodium carbonate solution drop by drop, there is no obvious phenomenon first, and then a large amount of gas is generated
na2co3+hcl=nacl+nahco3,nahco3+hcl=nacl+h2o+co2↑
2) If sodium carbonate is dropped dropwise into hydrochloric acid solution, a large amount of gas is also generated: Na2CO3 + 2HCl = 2NaCl + H2O + CO2
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Sodium bicarbonateThe equation for the chemical reaction with sodium hydroxide solution is given below
nahco₃+naoh=na₂co₃+h₂o
Sodium bicarbonate with sodium hydroxide solutionIonic reactionsThe equation is as follows:
hco₃⁻+oh⁻=co₃²⁻h₂o
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Sodium bicarbonateThe ionic equation du for the reaction with sodium hydroxide is: oh + HCO h o + CO
Chemical equation.
For naoh + nahco = na co + h o.
Sodium bicarbonate is a white fine crystal that has a solubility in water.
Less than sodium carbonate.
Sodium bicarbonate is an acid salt formed by neutralizing a strong base with a weak acid.
When soluble in water, it is weakly alkaline.
NaHCO3 + NaOH ==Na2CO3 + H2O write ion reaction.
The gist of the equation is to first split the chemical formula of the soluble substance and remove the same ions on both sides of the equal sign. Finally, Jane is fine.
Split: Na+ +HCO3- +Na+ +OH- =2Na+ +CO32- +H2O
Deleted: HCO3- +OH- =CO32- +H2O<>
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Sodium bicarbonate reacts with sodium hydroxide to form sodium carbonate and water, and the chemical equation of anti-Zheng code Piying is: NaHCO3+NaOH Na2CO3+H2O; Sodium bicarbonate and sodium hydroxide and sodium carbonate need to be disassembled, and the modulus water needs to be retained in molecular formula, and the ionic reaction of the reaction is: HCO3-+OH-CO32-+H2O, so the answer is:
nahco3+naoh...
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The reaction of sodium bicarbonate and hydrochloric acid belongs to the complex separation and disadvantage solution reaction of dust, and the chemical equation is.
Nahco nucleopose + HCl = NaCl + H o + CO (gas).
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Na2CO3, the historical and molecular mass of 106, Na%=46 106, C%=12 106, O%=48 106
44gCO2 is produced per 106g of sodium carbonate, Na2CO3 + 2HCl = 2NaCl + CO2 + H2O (other acids can also be rotted).
Hope, thank you
Go to a certain sample.
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