Salt cake is chemically denoted by_________________?
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Answer: A. Na2SO4
Explanation
Salt cake is the traditional industrial and chemical trade name for anhydrous sodium sulfate. Its precise chemical formula is written as Na2SO4, representing sodium cations bonded to sulfate anions. This white crystalline solid is utilized across multiple heavy chemical manufacturing and processing sectors. Historically, salt cake was obtained as a byproduct during the industrial production of hydrochloric acid. Anhydrous sodium sulfate acts as a neutral salt that dissolves readily in water solutions. Purity specifications for salt cake depend heavily on its intended end-use in paper or glass manufacturing.
Kraft paper pulp mills use salt cake as a makeup chemical to replenish sulfur and sodium losses. Glass manufacturing plants add sodium sulfate to molten glass batches to help eliminate small trapped gas bubbles. Detergent powder formulations occasionally incorporate sodium sulfate as an inexpensive inert bulking filler. CaSO4 point half H2O is the chemical formula for plaster of Paris or hemihydrate calcium sulfate. MgSO4 represents magnesium sulfate, commonly known as Epsom salt rather than industrial salt cake. BaSO4 is barium sulfate, an insoluble compound used in medical imaging and drilling mud weighting.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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