Aluminium reacts with aqueous sodium hydroxide (NaOH) and produce sodium aluminate (NaAlO2) and hydrogen gas as products.

When colourless sodium hydroxide solution is added to pale green iron(II) sulfate solution, a green precipitate of ironII hydroxide forms (and a colourless solution of sodium sulfate).

Type of Chemical Reaction: For this reaction we have a double replacement reaction. Balancing Strategies: This is a double displacement reaction. It is helpful to count the OH- as one thing since you have it on both sides of the equation (see video solution in “Show Balanced Equation”).

Now we have to find out which iron salts react with sodium hydroxide to form iron (II) hydroxide and iron (III) hydroxide. to form a green precipitate. The green precipitate is of iron (II) hydroxide. The iron (II) hydroxide is formed when iron (II) sulphate reacts with sodium hydroxide.

Zinc reacts with aqueous sodium hydroxide to form sodium zincate and hydrogen gas. The reaction takes place at a temperature of 550∘C. This compound is possible because Zn is capable of displacing Hydrogen from both acids and bases and therefore is called an Amphoteric metal and its oxide is an Amphoteric oxide.

NaOH

Some common bases as sodium hydroxide, ammonia and more

The pH of your NaOH solution is 13.