Iron filings removed magnetically. Water will dissolve sodium chloride and suspend sand. Sand can be filtered out of the solution, and salt reovered by evaporation of water. Naphthalene can be removed separately if necessary by solution of mixture in alcohol.
werde
which method will be used to separate sodium chloride and aluminium particals
You can separate gold from sodium gold chloride by adding zinc powder to the sodium gold chloride and heating the mixture. Then you will be left with just gold.
Dissolve the mixture in water. The precipitate is lead chloride. By filtering the solution and followed by evaporation, sodium chloride can be extracted.
By a repeated crystallization/recrystallization process.
werde
which method will be used to separate sodium chloride and aluminium particals
To separate naphthalene balls from sodium chloride, simply add water until all the sodium chloride is dissolved. Then either filter, or just pour off the solution, and the naphthalene balls will be left behind. Naphthalene is very insoluble in water, and sodium chloride is very soluble in water.
Naphthalene is a sublimate. A sublimate is a substance which changes directly from the solid state to the gaseous state and vice-versa. So, by utilising this property, we can separate the mixture of sodium chloride and naphthalene by heating it. The naphthalene will sublimate and we'll be left with sodium chloride.
Sodium chloride is soluble in water.
You can separate gold from sodium gold chloride by adding zinc powder to the sodium gold chloride and heating the mixture. Then you will be left with just gold.
A heterogeneous mixture: There are no chemical bonds between the iron filings and sand.
Because metallic sodium reacts quickly and violently with water.
Sodium Chloride dissolved in water will form sodium but sodium reacts with water to form sodium hydroxide, molten sodium chloride will do it .
Dissolve the mixture in water. The precipitate is lead chloride. By filtering the solution and followed by evaporation, sodium chloride can be extracted.
By a repeated crystallization/recrystallization process.
They separate at the boiling point of water, 100o Celsius, because the water boils away and the sodium chloride is left behind.