Pour 0.5 ml of ferric chloride (3) into a test tube, add 0.5-1 ml of sodium or potassium hydroxide. Write down the reaction

Pour 0.5 ml of ferric chloride (3) into a test tube, add 0.5-1 ml of sodium or potassium hydroxide. Write down the reaction equation in molecular and ionic form.

Alkali is added dropwise to an aqueous solution of a salt of (soluble) ferric iron, which leads to the formation of insoluble iron (III) hydroxide – a brown precipitate is formed
Equation in molecular form:
FeCl3 + 3NaOH = Fe (OH) 3 + 3NaCl
Taking into account the dissociation processes, we write the equation in full ionic form
Fe (3+) + 3Cl (-) = 3Na (+) + 3OH (-) = Fe (OH) 3 + 3Na (+) + 3Cl (-)
Reducing the same ions in the products and reagents of the reaction, we obtain the shortened equation
Fe (3+) + 3OH (-) = Fe (OH) 3



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