Titration technique, significant figures, and common lab safety and measurement practices for pre-health lab courses.
33 cards · basic cards · AI-written, checked twice. Edit anything.
- What is the substance of unknown concentration in a titration called?
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The analyte.- What is the solution of known concentration used to titrate an analyte called?
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The titrant (standard solution).- What is the equivalence point in a titration?
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The point where moles of titrant equal moles of analyte, stoichiometrically.- What is the endpoint of a titration?
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The point where the indicator changes color, signaling the reaction is complete.- Why can the endpoint differ slightly from the true equivalence point?
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The indicator changes color slightly before or after the exact equivalence point.- What piece of glassware delivers precisely measured, variable volumes of titrant?
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A burette.- To what precision can a standard burette typically be read?
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To the nearest 0.01 mL.- Why should a burette be rinsed with titrant before filling it for use?
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To prevent the titrant from being diluted by residual water in the burette.- Why should the flask be swirled continuously during titrant addition?
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To ensure the titrant mixes evenly and reacts completely with the analyte.- How is the volume of titrant delivered in a titration calculated?
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By subtracting the initial burette reading from the final burette reading.- At eye level, where should the meniscus of a clear aqueous solution be read?
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At the bottom of the curved liquid surface.- What common acid-base indicator turns from colorless to pink near pH 8 to 10?
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Phenolphthalein.- Why is a volumetric flask used to prepare a standard solution instead of a beaker?
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A volumetric flask measures one precise volume far more accurately than a beaker.- Are all nonzero digits in a measurement significant?
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Yes.- Are zeros between two nonzero digits significant?
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Yes, they are always significant.
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