Thioridazine, C21H26N2S2, is a pharmaceutical agent used to regulate dopamine. (dopamine a neurotransmitter, affects brain processes that control movement, emotional response and the ability to experience pleasure and pain.) A chemist can analyze a sample of the pharmaceutical for the thioridazine content by decomposing it to convert all the sulfur in the compound to sulfate ion. This is then “trapped” as water-insoluble barium sulfate. SO42- (aq, from thioridazine) + BaCl2
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
Thioridazine, C21H26N2S2, is a pharmaceutical agent used to regulate dopamine. (dopamine a neurotransmitter, affects brain processes that control movement, emotional response and the ability to experience pleasure and pain.) A chemist can analyze a sample of the pharmaceutical for the thioridazine content by decomposing it to convert all the sulfur in the compound to sulfate ion. This is then “trapped” as water-insoluble barium sulfate.
SO42- (aq, from thioridazine) + BaCl2 (aq) ¾® BaSO4 (s) + 2 Cl- (aq)
Suppose a 12 tablet sample of the drug yielded 0.301 g of BaSO4. What is the thioridazine content, in milligrams, of each tablet?
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