Tungstic Acid Formula: Structure, Properties, Uses

Chemically, Tungstic Acid Formula is H 2 W O 4 or W O 3 H 2 O . It has a strong acidic flavour and is a white or yellowish powder that dissolves in water. The most widely used commercial form of tungsten is tungsten trioxide, which is hydrated to generate tungstic acid. A variety of tungsten compounds, such as tungsten carbide and tungsten oxide, depend on tungstic acid as a precursor. Additionally, it serves as a catalyst in the synthesis of other organic molecules, including acrylic acid. Additionally, tungstic acid is used in the production of pigments and dyes, as well as in analytical chemistry as a reagent for the measurement of phosphates and arsenates.

Introduction to Tungsten

Compounds of Tungsten

Tungsten Carbide

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Tungstic Acid Formula

Structure of Tungstic Acid Formula

Preparation of Tungstic Acid

Download PDF Tungstic Acid Formula

Procedure:

• 200 mL of distilled water should be used to dissolve 20 grammes of sodium tungstate dihydrate in a glass beaker. Until the sodium tungstate is completely dissolved, stir the mixture.
• The sodium tungstate solution should be mixed with 50 mL of hydrochloric acid. For a few minutes, stir the mixture until the liquid turns hazy.
• Stir the solution continuously for 1–2 hours after heating it to 70–80°C. A yellow precipitate will eventually form from the solution.
• Use filter paper and a funnel to filter the precipitate after allowing the solution to cool to room temperature.
• To get rid of any last-minute contaminants, thoroughly wash the precipitate with distilled water.
• The precipitate must be dried in an oven at 100°C for many hours before it can be ground into a dry, white powder.

Tungstic Acid Formula Applications

• Catalyst: The synthesis of sulfuric acid, a commonly used industrial chemical, uses tungstic acid as a catalyst. Additionally, it functions as a catalyst in the transformation of alkanes into alkenes.
• Tungstic acid is a yellow pigment that is used in ceramics and other materials.
• Due to its capacity to change colour when exposed to an electric current, tungstic acid is utilised in electrochromic devices like smart windows and electrochromic mirrors.
• Tungstic acid is a component of photographic films and X-ray screens because of its high density, which enables it to absorb X-rays and other types of ionising radiation.
• Manufacturing of tungsten carbide: The manufacturing of tungsten carbide, which is used in cutting tools, drilling tools, and other industrial applications, requires tungstic acid as a crucial raw ingredient.
• Chemical analysis: Tin and copper are two elements that are tested for using tungstic acid as a reagent in chemical analysis.

Tungstic Acid Properties

• Physical characteristics: Yellowish-white solid, tungstic acid is a chemical. It has no taste or odour and is insoluble in water.
• Chemical properties: Tungstic acid interacts with a wide range of substances, including metals, non-metals, and organic molecules. It is a powerful oxidising agent. Heat in a reducing environment can convert it to tungsten trioxide.
• Acidic characteristics: Tungstic acid has a pKa of around 1.7, making it a weak acid. It can create the tungstate ion by donating two protons in a solution.
• Thermal stability: Tungstic acid decomposes at higher temperatures, releasing water and producing tungsten trioxide, although it is stable at room temperature.
• Applications: The manufacturing of tungsten metal and alloys, as well as the creation of catalysts and pigments, all include the usage of tungstic acid. Additionally, it serves as an analytical reagent in the chemical sector.
• Toxicity: Although tungstic acid is often thought to have a low toxicity, exposure to high doses can irritate the digestive and respiratory tracts. Large doses of tungstic acid can have negative health consequences when ingested or inhaled.