In plotting titration curve, pH versus the volume of the titrant, how many variable regions are there ?
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Sudden changes in the colour of an indicator used in a titration reaction can be used for __________.
A. Detecting completion of a titration reaction
B. Monitoring progress of a titration reaction
C. None of the above
D. All of the above
Answer: A
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How many millilitres of 0.40 M of $$H_{2}SO_{4}$$ will react with 15ml of a 0.40M solution of NaoH .
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Which of the following types of volumetric procedure is useful for the determination of metal ions in solution .
A. Redox titration
B. Complexometric titration
C. Acid - base titration
D. Precipitation titration
Answer: B
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Primary standards are used for experimental analysis because ________.
A. They can be obtained easly
B. Their purity is above 99.9%
C. They can easily be recrystallized to their purest form
D. Their nature remain so throughout the analysis
Answer: B
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Potentiometer is used to determine _______.
A. End point of a gravimetric analysis
B. Monitor the progress of reaction of a complexometric titration
C. End point of a redox titration
D. Rate of reaction of an acid-base titration reaction
Answer: C
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The ___________ is usually added from the burette.
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It is important that a titration reaction have large equilibrium constant, so that, _________.
A. Each addition of titrant is completely used up by the analyte
B. The reaction will be rapid
C. The reaction will be quantitative
D. The end point of the titration reaction with the equivalence point will be reproducible
Answer: A
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In blank titration, the solution does not contain _________ .
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Random distribution of the components in an analytical sample can be achieved through ___________.
A. Mixing the solid laboratory samples before analysis
B. Grinding the solid laboratory samples before analysis
C. Removing the water content of the solution of the sample to be analyse
D. Converting the solid laboratory sample to its solution form
Answer: A
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