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Chemistry, 29.03.2022 22:50 ceceshelby1130
A chemist needs to find the concentration of a solution of barium hydroxide.
Barium hydroxide solution is an alkali.
The chemist could find the concentration of the barium hydroxide solution using two different methods.
Method 1
• An excess of sodium sulfate solution is added to 25 cm3 of the barium hydroxide solution. A precipitate of barium sulfate is formed.
• The precipitate of barium sulfate is filtered, dried and weighed.
• The concentration of the barium hydroxide solution is calculated from the mass of
barium sulfate produced.
Method 2
• 25 cm3 of the barium hydroxide solution is titrated with hydrochloric acid of known concentration.
• The concentration of the barium hydroxide solution is calculated from the result of the titration.
Compare the advantages and disadvantages of the two methods. (5)
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Answers: 2
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Chemistry, 22.06.2019 16:00
The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride
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A chemist needs to find the concentration of a solution of barium hydroxide.
Barium hydroxide solu...
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