Discovering The Concentration Of Sodium Hydroxide And Citric Acid

1526 Words Nov 12th, 2014 7 Pages
Discovering the Concentration of Sodium Hydroxide and Citric Acid
Introduction:
This laboratory experiment focuses on determining the quantity of a substance that is existing in a certain solution, by using titration in the experiment, (French et al. 2014). A hypothesis for this experiment is that the unknown concentration of a solution will be identified. The objectives are to identify the concentration of citric acid and the concentration of sodium hydroxide in solutions of unknown concentration. In order to discover the concentration of a solution, acid-base titration must be executed during the experiment, (French et al. 2014). The standard solution (known concentration) is reacted entirely during titration due to stoichiometry located in the equation, and because the chemical reaction is between a base and an acid, the products formed from the reaction will be salt and water, (French et al. 2014). The equivalence point occurring in an acid-base titration will have the same amount of moles in H+ as in OH-. The equations that are used for this acid-base titration are as follows:
HCl(aq)+NaOH(aq)→NaCl(aq)+H_2 O(l)
H_2 SO_4 (aq)+2NaOH(aq)→〖Na〗_2 SO_4 (aq)+2H_2 O(l)
To determine the concentration of acid in the solution, the number of NaOH moles supplemented to equivalence point must be discovered, (French et al. 2014).
Because sodium hydroxide takes in water and is hydroscopic, the discovery of the concentration is required that sodium hydroxide is titrated against a…
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