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Questions and Answers
Which solution is produced when sodium thiosulfate and hydrochloric acid react?
Which solution is produced when sodium thiosulfate and hydrochloric acid react?
- A yellow cloudy solution
- An insoluble precipitate of sulfur (correct)
- A clear and colorless solution
- A diluted solution
What is the purpose of the cross drawn on a piece of paper?
What is the purpose of the cross drawn on a piece of paper?
- To mix the sodium thiosulfate and hydrochloric acid
- To measure the rate of the chemical reaction
- To observe when the cloudy yellow color gets too thick (correct)
- To dilute the sodium thiosulfate
What is the role of the concentration of sodium thiosulfate in the experiment?
What is the role of the concentration of sodium thiosulfate in the experiment?
- To determine the time it takes for the precipitate to form (correct)
- To measure the rate of the chemical reaction
- To produce an insoluble precipitate of sulfur
- To dilute the hydrochloric acid
What happens to the solution when the precipitate of sulfur is formed?
What happens to the solution when the precipitate of sulfur is formed?
How much sodium thiosulfate is mixed with hydrochloric acid in the experiment?
How much sodium thiosulfate is mixed with hydrochloric acid in the experiment?
During the reaction, the solution changes from clear and colorless to a ______ cloudy color.
During the reaction, the solution changes from clear and colorless to a ______ cloudy color.
The rate of the chemical reaction is measured by timing how long it takes for the ______ yellow color to get so thick that it can't be observed.
The rate of the chemical reaction is measured by timing how long it takes for the ______ yellow color to get so thick that it can't be observed.
To measure the rate of the reaction, a _____ is drawn on a piece of paper and placed underneath the reaction vessel.
To measure the rate of the reaction, a _____ is drawn on a piece of paper and placed underneath the reaction vessel.
The concentration of ________ is varied in the experiment to observe its effect on the time it takes for the precipitate to form.
The concentration of ________ is varied in the experiment to observe its effect on the time it takes for the precipitate to form.
The sodium thiosulfate is mixed with _______ in the experiment.
The sodium thiosulfate is mixed with _______ in the experiment.
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