A quantitative examintaion of multiple methods for standardizing a dilute hydrochloric acid solution in an undergraduate chemistry laboratory. 6
By: Meaghen, Nancy E. 4 0 16 [, ] | [, ] |
Contributor(s): 5 6 [] |
Language: Unknown language code Summary language: Unknown language code Original language: Unknown language code Series: ; 46Edition: Description: Content type: text Media type: unmediated Carrier type: volumeISBN: ISSN: 2Other title: 6 []Uniform titles: | | Subject(s): -- 2 -- 0 -- -- | -- 2 -- 0 -- 6 -- | 2 0 -- | -- -- 20 -- | | -- -- Standardization.;Hydrochloric acid.;Chemical laboratories.;Chemistry, analytic - Quantitative.;College students. -- -- 20 -- | -- -- -- 20 -- --Genre/Form: -- 2 -- Additional physical formats: DDC classification: | LOC classification: | QD1 .J826ce | 2Other classification:| Item type | Current location | Home library | Collection | Call number | Status | Date due | Barcode | Item holds |
|---|---|---|---|---|---|---|---|---|
| Book | PLM | PLM Periodicals Section | Periodicals | QD1 (Browse shelf) | Available | PER 892Q |
ABSTRACT : The objective of the project was to compare the different published methods for standardizing dilute hydrochloric acid solutions. To date there are no known studies that have examined the possible methods of standardizing dilute HCl solutions for accuracy and precision when performed by undergraduate students. There are three different suitable bases available for the process and multiple indicator choices. This article attempts to identify the most accurate method(s) for use in the undergraduate laboratory. Students were given an unknown solution of dilute HCl and assigned to standardize it by eight methods (32 titrations), reporting both their experimental results and preference for the different indicator-base combinations. The results from a small sample of students indicate that there are some accuracy differences between possible methods. 56
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