Iron Chloride + Sodium Hydroxide ------> Iron Hydroxide + Sodium Chloride
Balanced reaction equations:
FeCl3 + 3NaOH ------> Fe(OH)3 + 3NaCl
or
FeCl2 + 2NaOH ------> Fe(OH)2 + 2NaCl
because iron can be either Iron(III)[Fe3+] or Iron(II)[Fe2+]
Sodium displaces the sulfate to make sodium sulfate; iron displaces the hydroxide to make ferrous hydroxide which becomes brown.
Sodium Hydroxide reacts with fat to make soap which then dissolves unblocking the drain.
A mix of sodium silicate, aka waterglass, and calcium cloride will create calcium silicate.
To make sodium hydroxide, you need to electrolyse the solution of sodium chloride. Electricity is needed for electrolysis and that will cost money. There will also be the cost of equipment such as electrodes. (Electrodes have to be replaced after a while). Lastly, there may also be the cost of labour. The men who make sodium hydroxide will need to get paid.
when they react, it forms copper hydroxide which is insoluble, and hence a precipitate in the resultant solution of sodium nitrate
Sodium displaces the sulfate to make sodium sulfate; iron displaces the hydroxide to make ferrous hydroxide which becomes brown.
Iron chloride and sodium hydroxide will make iron hydroxide and sodium chloride. For Iron II chloride the equation is: 2NaOH(aq) + FeCl2(aq) --> 2NaCl(aq) + Fe(OH)2(S). For Iron III chloride the equation is: 3NaOH(aq) + FeCl3(aq) --> 3NaCl(aq) + Fe(OH)3(S).
Cooking doesn't modify sodium cloride.
It is because Sodium Hydroxide is cheap
Absolutely not. There is no sodium in that equation whatsoever.
Just a solution of sodium hydroxide in water.
Sodium hydroxide has many applications in the chemical industry.
sodium hydroxide, NaOH
partially, depending on the percentage of the sodium hydroxide, if its above 30% it is possible.
Sodium Hydroxide reacts with fat to make soap which then dissolves unblocking the drain.
Sodium Hydroxide does not undergoes chemical change with water. It just becomes dilute or aqueous.
Since Sodium Hydroxide is a base and hydrochloric acid is an acid, you will make water and sodium chloride.