Question

The components listed on the label of a typical box of salt are sodium chloride, sodium silicoaluminate, sodium thisulfate, and potassium iodide. On the basis of its ingredients, would you conclude that table salt is a substance or mixture? Explain your answer.

Answer 1

Table salt is a mixture of substance.

Table salt is sodium chloride combined with iodine sources (for nutrition), stabilizers for the iodine, and anti-caking compounds to make it pour by preventing it from absorbing water from the air.

Potassium iodide is added as a nutrient, to prevent goiter, a thyroid gland problem caused by lack of iodine, and to prevent mental retardation associated with iodine deficiency.

An anticaking agent is an additive placed in powdered or granulated materials, such as table salt, to prevent the formation of lumps (caking) and for easing packaging, transport, and consumption.

sodium silicoaluminate acts as anti caking agents.

sodium thiosulfate acts as reducing agent which controls the convertion from potassium iodide to Iodine.