The compound used in borax bead test for the detection of basic redicals to form colored bead is:
Correct answer: D. Na2B4O710H2O
- A. H2BO2
- B. (C2H5)3BO3
- C. Ca2B6O115H2O
- D. Na2B4O710H2O
Explanation
Per one molecule of borax, there are 10 molecules of water of crystallization. Hence, metaborate is formed in the borax bead test.
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Salt hydrolysis explains how ions from weak acids or weak bases react with water and affect the pH of a solution. The content covers acidic, basic and neutral salts, hydrolysis equations, Ka, Kb and Kw relationships, degree of hydrolysis and buffer connections, distinguishing hydrolysis from simple acid-base neutralisation.
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