What forms a pale green solution?

What forms a pale green solution?

The pale green ion is [Fe(H2O)6]2+. If solution B is allowed to crystallise, the iron(II) sulphate (also called green vitriol) gives iron(III) oxide H on strong heating, and sulphur dioxide (sulphur(IV) oxide) I and sulphur trioxide (sulphur(VI) oxide) J: B à H + I + J: 2FeSO4 à Fe2O3 + SO2 + SO3.

What forms a green precipitate with sodium hydroxide?

iron(II) nitrate
To tell whether an unknown substance contains iron(II) nitrate or iron(III) nitrate, add a few drops of sodium hydroxide solution: if you get a green precipitate, the unknown substance is iron(II) nitrate.

Is sodium hydroxide green?

It is commonly present in commercial drain and oven cleaners. Sodium hydroxide is also known as lye or soda , or caustic soda. At room temperature, sodium hydroxide is a white crystalline odorless solid that absorbs moisture from the air.

How can you tell the difference between calcium and magnesium ions?

Magnesium ions give a white precipitate insoluble in excess in both sodium hydroxide or ammonia solution. Calcium ions give a white precipitate insoluble in excess sodium hydroxide solution, but no precipitate or a very slight precipitate in ammonia solution.

Why does the solution turn pale green when Fe reacts with HCL?

When dilute hydrochloric acid is added to iron hydrogen gas and iron(II)chloride are produced. Observation: Iron is said to displace hydrogen ions in solution producing fizzing colourless odourless hydrogen gas which pops near flame and iron(II)chloride are produced which is pale green is colour.

What makes HCL green?

Hydrochloric acid is a colorless liquid with the sharp odor of hydrogen chloride. The technical grade has a yellowish green color caused by admixtures of chlorine and iron salts.

What forms a green precipitate with ammonia?

Green precipitate is formed if iron(II) ion is present. Precipitate is insoluble in excess aqueous ammonia. Reddish brown precipitate is formed if iron(III) ion is present. Precipitate is insoluble in excess aqueous ammonia.

Which ion produces a pale blue precipitate with NaOH?

The correct option is A Copper The blue precipitate further dissolves in excess of ammonia solution to give an azure blue solution.

What color is ammonium hydroxide?

ammonium hydroxide, also called ammonia solution, ammonia water, aqueous ammonia, or aqua ammonia, solution of ammonia gas in water, a common commercial form of ammonia. It is a colourless liquid with a strong characteristic odour.

What Colour is potassium hydroxide?

Potassium Hydroxide is an odorless, white or slightly yellow, flakey or lumpy solid which is often in a water solution.

What color is EDTA?

EDTA is short for ethylenediaminetetraacetic acid. A blue dye called Eriochrome Black T (ErioT) is used as the indicator. This blue dye also forms a complex with the calcium and magnesium ions, changing colour from blue to pink in the process.

What is the Colour of calcium hydroxide?

Calcium Hydroxide – Ca(OH)2. Calcium hydroxide, commonly referred to as slaked lime, is described by the chemical formula Ca(OH)2. It is an inorganic compound which has a white, powdery appearance in its solid-state.