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Info: FECl2 might be an improperly capitalized: Fe
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Info: FE(OH)2 might be an improperly capitalized: Fe(OH)2Info: NACl might be an improperly capitalized: Na
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Instructions on balancing chemical equations:Enter an equation of a chemical reaction và click "Balance". The answer will appear below
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Bạn đang xem: Fecl2 + 2 naoh → fe(oh)2 + 2 nacl

Example: Fe3+ + I- = Fe2+ + I2Substitute immutable groups in chemical compounds lớn avoid ambiguity. For instance equation C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but Ph
C2H5 + O2 = Ph
OH + CO2 + H2O will
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Aqueous ferrous chloride (Fe
Cl2) reacts with aqueous sodium hydroxide Na
OH to produce ferrous hydroxide Fe(OH)2 and sodium chloride (Na
Cl). Màu sắc changes, precipitating, balanced reaction, ionic equation of Fe
Cl2 + Na
OH reaction are discussed in this tutorial.


Aqueous ferrous chloride và aqueous sodium hydroxide reaction

Ferrous chloride ( Iron(II) chloride ) is a soluble inorganic compound in water và form a pale green color solution.

Sodium hydroxide is a strong alkaline colorless solution.

What are the products when aqueous ferrous chloride reacts with aqueous sodium hydroxide

When we địa chỉ cửa hàng aqueous Na
OH solution to aqueous Fe
Cl2 solution, green màu sắc precipitate is formed. This precipitate is ferrous hydroxide ( Fe(OH)2 ).

Cl2 + Na
OH = Fe(OH)2 + Na

Above reaction is not a balanced chemical reaction. Therefore, you need lớn balance this reaction and we will vì it in next section.

How to lớn balance Fe
Cl2 and Na
OH reaction?

This reaction is a not a redox reaction. Therefore by observing number of atoms in right side & left side, we can balance the reaction in few seconds.

Balanced reaction of Fe
Cl2 & Na

Cl2 + 2Na
OH = Fe(OH)2 + 2Na

According to the stoichiometry of the reaction, 1 mol of Fe
Cl2 reacts with 2 mol of Na
OH and produce 1 mol of Fe(OH)2 and 2 mol of Na

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Balanced reaction of Fe
Cl2 và Na
OH with physical states

Cl2(aq) + 2Na
OH(aq) = Fe(OH)2(s) + 2Na

Solubility of Fe(OH)2 is poor in water. Hence it deposits as a precipitate.

What will happen if Fe(OH)2 is exposed to air?

Fe(OH)2 is easily oxidized to lớn Fe(OH)3 by oxygen gas. Therefore, green màu sắc of the precipitate will be changed lớn reddish brown when Fe(OH)3 is formed.

Questions asked by students

Ask your question và find the answer free.

If small voloume of low concentratrated Na
OH is added to Fe
Cl2 solution, will it give a precipitate?

Whether Na
OH concentration is low, if ferrous ion concentration is high, Fe(OH)2 precipitate will be formed due lớn having enough concentrations of ions to lớn exceed solubility product.

Write the ionic equation of forming Fe(OH)2, from Na
OH and Fe

Fe2+ + OH- → Fe(OH)2

If Fe
Cl2 + Na
OH gives Fe(OH)2 pricipitate, will it dissove in excess Na

Fe(OH)2 is not soluble in excess Na
OH or aqueous ammonia solution.

What are the other ferrous +2 compound which can be used to prepare Fe(OH)2 with Na

If we can give Fe2+ ion lớn the Na
OH solution, Fe(OH)2 precipitate can be formed. Lớn give Fe2+ ions, soluble Fe2+ compound should be used. Therefore, Fe
SO4, Fe(NO3)2 can be used as compounds. Fe
CO3 cannot be used because it is insoluble in water & gives very low Fe2+ ion concentration too.

After few days of adding aqueous Na
OH to aqueous Fe
Cl2, I saw a brown màu sắc precipitate. Why was happened lớn green color was at their beginning?

In the presence of oxygen gas, Fe2+ ions readily oxidizes khổng lồ Fe3+ ions. That's why green màu sắc of Fe(OH)2 is tuned khổng lồ brown color of Fe(OH)3.

How bởi I prepare Fe(OH)2 precipitate when ferrous, chlorine and aqueous sodium hydroxide are provided as raw materials?

This is not a single step work. You have to vì some reactions.

Solid ferrous metal reacts with chlorine gas to produce solid ferric chloride. Add ferric chloride lớn water. Then, again add some ferrous to that aqueous solution to lớn react with ferric chloride. This will give ferrous chloride. Then, địa chỉ sodium hydroxide solution to ferrous chloride solution.Related Tutorials Fe
Cl3 + Na
OH reaction Reaction of cold và hot Na
OH + Cl2 Solubility of metal hydroxides
Sodium hydroxide và chlorine gas reaction Sodium hydroxide và phenol reaction Oxalic acid & sodium hydroxide reaction Magnesium chloride & sodium hydroxide reaction Ethanoic acid & sodium hydroxide reaction Zinc chloride và Na
OH reaction reaction

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