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water of crystallization of Sodium Carbonate
Member rating: No Rating | Words: 1215 | Submitted: Fri Oct 12 2007
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WATER OF CRYSTALLIZATION OF Na2CO3 AIM: The aim is to find out the number of molecules of water present in the hydrated sodium carbonate by titrating it with hydrochloric acid. GENERAL BACKGROUND: According to Brønsted and Lowry (1923) an acid is defined as a proton (H+) donor, and a base as a proton (H+) acceptor. For example, sulphuric acid, a strong acid, is a good proton donor while sodium hydroxide, a strong alkali (soluble base) contains the hydroxide ion (OH-) which is a strong proton acceptor. When an acid reacts with a carbonate it gets neutralized and forms salt, water and carbon dioxide gas. Acid + Carbonate Salt + water + carbon dioxide gas To show when neutralization has been reached, an indicator is used. A suitable indicator is methyl orange. The end-point of this reaction is determined when there is a colour change. HYPOTHESIS: The neutralization reaction which takes place: Hydrochloric acid + Sodium...
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