2006-10-10 03:39:47 · 16 answers · asked by jalanankur 1 in Science & Mathematics ➔ Chemistry
NaOH
2006-10-10 03:41:55 · answer #1 · answered by im4friend 2 · 1⤊ 0⤋
Caustic soda solution has got the chemical formula NaOH, but dissolved in water. Not dissolved it is at room temperature a white crystallized powder.
2006-10-10 21:09:48 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Sodium hydroxide (NaOH), also known as lye or caustic soda, is a caustic metallic base. An alkali, caustic soda is widely used in many industries, mostly as a strong chemical base in the manufacture of pulp and paper, textiles, drinking water, and detergents. Worldwide production in 1998 was around 45 million tonnes. Sodium hydroxide is also the most common base used in chemical laboratories.
Pure sodium hydroxide is a white solid, available in pellets, flakes, granules, and also 50% saturated solution. It is very deliquescent and also readily absorbs carbon dioxide from the air, so it should be stored in an airtight container. It is very soluble in water with liberation of heat. It also dissolves in ethanol and methanol, though it exhibits lower solubility in these solvents than does potassium hydroxide. It is insoluble in ether and other non-polar solvents. A sodium hydroxide solution will leave a yellow stain on fabric and paper.
2006-10-10 03:41:16 · answer #3 · answered by Anonymous · 1⤊ 1⤋
Sodium Hydroxide(Caustic Soda) formula is NaOH
it is a strong base in a form of flakes, granules, pellets and solutions of different concentrations , and widely used in industry.
2006-10-10 05:24:57 · answer #4 · answered by basimsaleh 4 · 0⤊ 0⤋
Caustic soda is also known as sodium hydroxide, caustic, and lye. Anhydrous (100%, solid) sodium hydroxide has a chemical formula of NaOH and a molecular weight of 40.00..
2006-10-10 03:57:12 · answer #5 · answered by Anonymous · 0⤊ 0⤋
The chemical formula for Sodium Hydroxide (caustic soda) is NaOH
_
2006-10-10 03:40:30 · answer #6 · answered by GoogleRules 3 · 2⤊ 1⤋
NaOH is also called as costic soda. It is widely used in the reaction where strong acid is necessary. It is used in the denaturation of DNA, in which it degrades the hydrological covering around DNA.
2006-10-10 04:23:21 · answer #7 · answered by betab_botany 1 · 0⤊ 0⤋
Sodium Hydroxide
NaOH
2006-10-10 03:42:00 · answer #8 · answered by tone 2 · 1⤊ 0⤋
Chemical properties
Sodium hydroxide is completely ionic, containing sodium ions and hydroxide ions. The hydroxide ion makes sodium hydroxide a strong base which reacts with acids to form water and the corresponding salts, e.g., with hydrochloric acid, sodium chloride is formed:
NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
In general such neutralization reactions are represented by one simple net ionic equation:
OH−(aq) + H+(aq) → H2O
This type of reaction releases heat when a strong acid is used. Such acid-base reactions can also be used for titrations, and indeed this is a common way for measuring the concentration of acids. Related to this is the reaction of sodium hydroxide with acidic oxides. The reaction of carbon dioxide has already been mentioned, but other acidic oxides such as sulfur dioxide (SO2) also react completely. Such reactions are often used to "scrub" harmful acidic gases (like SO2 and H2S) and prevent their release into the atmosphere.
2NaOH + CO2 → Na2CO3 + H2O
Sodium hydroxide slowly reacts with glass to form sodium silicate, so glass joints and stopcocks exposed to NaOH have a tendency to "freeze". Flasks and glass-lined chemical reactors are damaged by long exposure to hot sodium hydroxide, and the glass becomes frosted. Sodium hydroxide does not attack iron or copper, but many other metals such as aluminium, zinc and titanium are attacked rapidly. In 1986 an aluminium road tanker in the UK was mistakenly used to transport 25% sodium hydroxide solution, causing pressurisation of the contents and damage to the tanker. For this same reason aluminium pans should never be cleaned with lye.
2Al(s) + 6NaOH(aq) → 3H2(g) + 2Na3AlO3(aq)
Many non-metals also react with sodium hydroxide, giving salts. For example phosphorus forms sodium hypophosphite, while silicon gives sodium silicate.
Unlike NaOH, the hydroxides of most metals are insoluble, and therefore sodium hydroxide can be used to precipitate metal hydroxides. One such hydroxide is aluminium hydroxide, used as a gelatinous floc to filter out particulate matter in water treatment. Aluminium hydroxide is prepared at the treatment plant from aluminium sulfate by reaction with NaOH:
6NaOH(aq) + Al2(SO4)3(aq) → 2Al(OH)3(s) + 3Na2SO4(aq)
Sodium hydroxide reacts readily with carboxylic acids to form their salts, and it is even a strong enough base to form salts with phenols. NaOH can also be used for the base-driven hydrolysis of esters (as is saponification), amides and alkyl halides. However, the limited solubility of NaOH in organic solvents means that
2006-10-10 03:44:01 · answer #9 · answered by Brite Tiger 6 · 0⤊ 0⤋
the formula of this chemical compound named sodium hydroxide solution is NaOH. it is used as a neutralising agent.
2006-10-10 03:57:47 · answer #10 · answered by harry potter 1 · 0⤊ 0⤋