Titrimetric Analysis

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Questions and Answers
  • 1. 

    TITREMETRIC ANALYSIS REFERES TO________________________

    • A.

      QUANTITATIVE

    • B.

      QUALITATIVE

    Correct Answer
    A. QUANTITATIVE
    Explanation
    Titremetric analysis refers to quantitative analysis. This type of analysis involves determining the concentration or amount of a substance in a sample by measuring the volume of a solution of known concentration that is required to react completely with the substance of interest. Titrimetric analysis is based on the principle of stoichiometry and involves using a titrant, usually an acid or a base, to react with the analyte. The reaction is monitored using an indicator or by measuring a physical property such as pH or conductivity. By determining the volume of titrant required to reach a specific endpoint, the concentration of the analyte can be calculated.

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  • 2. 

    THE POINT AT WHICH TITRATION IS COMPLETED............

    • A.

      EQUIVALENCE POINT

    • B.

      THEORETICAL POINT

    • C.

      STOICHIOMETRIC END POINT

    • D.

      ALL OF THE ABOVE

    Correct Answer
    D. ALL OF THE ABOVE
    Explanation
    The correct answer is "ALL OF THE ABOVE". This means that all three terms - Equivalence Point, Theoretical Point, and Stoichiometric End Point - refer to the point at which titration is completed. These terms are used interchangeably to describe the stage in a titration when the reactants have reacted in the exact stoichiometric ratio, indicating that the reaction is complete.

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  • 3. 

    REACTION IN TITRIMETRIC ANALYSIS.............

    • A.

      NEUTRALIZATION REACTION

    • B.

      COMPLEX FORMATION REACTION

    • C.

      PRECIPITATION REACTION

    • D.

      OXIDATION - REDUCTION REACTION

    • E.

      ALL OF THE ABOVE

    Correct Answer
    E. ALL OF THE ABOVE
    Explanation
    The correct answer is "ALL OF THE ABOVE" because in titrimetric analysis, various types of reactions can occur depending on the specific analysis being conducted. Neutralization reactions occur when an acid and a base react to form a salt and water. Complex formation reactions involve the formation of a complex between a metal ion and a ligand. Precipitation reactions occur when an insoluble solid forms from the reaction of two soluble compounds. Oxidation-reduction reactions involve the transfer of electrons between species. Therefore, all of these reactions can be involved in titrimetric analysis depending on the specific circumstances.

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  • 4. 

    TRANSFAR OF ELECTRONE IS OCCUR IN............

    • A.

      NEUTRALIZATION REACTION

    • B.

      COMPLEX FORMATION REACTION

    • C.

      PRECIPITATION REACTION

    • D.

      OXIDATION - REDUCTION REACTION

    • E.

      ALL OF THE ABOVE

    • F.

      NONE OF THEM

    Correct Answer
    D. OXIDATION - REDUCTION REACTION
    Explanation
    In oxidation-reduction reactions, electrons are transferred from one species to another. This transfer of electrons results in a change in the oxidation state of the species involved. Therefore, the correct answer is "OXIDATION - REDUCTION REACTION." In neutralization reactions, there is no transfer of electrons. In complex formation reactions and precipitation reactions, there may be electron redistribution, but it is not the primary focus of these reactions.

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  • 5. 

    MOLARITY IS NUMBER OF MOLE OF SOLUTE DISSOLVED IN 1 LITRE OF SOLUTION

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement accurately defines molarity as the number of moles of solute dissolved in 1 liter of solution. Molarity is a common unit of concentration used in chemistry and is expressed as moles per liter (mol/L). This definition indicates that molarity is a measure of the amount of solute present in a given volume of solution, allowing for easy comparison of concentrations between different solutions. Therefore, the correct answer is true.

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  • 6. 

    ___________STANDARD IS A COMPOUND OF SUFFICEINT PURITY FROM WHICH A STANDARD SOLUTION CAN BE PREPARED BY DIRECTLY WEIGHING QUANTITY OF IT.

    Correct Answer
    PRIMARY
  • 7. 

    IMPURITIES OF PRIMARY STANDARD SHOULD NOT EXCEED  THEN ____________

    Correct Answer
    0.02
    Explanation
    The impurities of a primary standard should not exceed 0.02. This means that the primary standard should have a high level of purity, with impurities limited to a maximum of 0.02. This is important because primary standards are used as reference materials in analytical chemistry to accurately determine the concentration of a substance. Any impurities present in the primary standard could lead to inaccurate results and affect the reliability of the analysis. Therefore, it is crucial to ensure that the impurities in the primary standard are kept below the specified limit of 0.02.

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  • 8. 

    PRIMARY STANDARD FOR ACID BASE TITRATION..........

    • A.

      SODIUM CARBONATE

    • B.

      ZINC

    • C.

      SILVER

    • D.

      POTASSIUM DICHROMATE

    Correct Answer
    A. SODIUM CARBONATE
    Explanation
    Sodium carbonate is a primary standard for acid-base titration because it is a stable compound that can be easily obtained in pure form. It has a known chemical formula (Na2CO3) and a high molecular weight, which allows for accurate measurement of the amount used in the titration. Sodium carbonate also reacts completely with acids, making it suitable for determining the concentration of an unknown acid solution. Additionally, it has a relatively high solubility in water, ensuring that it can be easily dissolved and mixed with the acid solution for the titration process.

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  • 9. 

    PRIMARY STANDARD FOR COMPLEX FORMATION REACTION.........

    • A.

      SODIUM TETRABORATE

    • B.

      MAGNESIUM

    • C.

      SODIUM CHLORIDE

    • D.

      POTASSIUM BROMATE

    Correct Answer
    B. MAGNESIUM
    Explanation
    The given options are all potential primary standards for complex formation reactions. A primary standard is a highly pure and stable substance that can be used to accurately determine the concentration of another substance in a chemical reaction. Among the options, magnesium is the most suitable primary standard for complex formation reactions because it is readily available, relatively inexpensive, and has a high purity level. It can be easily weighed and dissolved in a solvent to prepare a standard solution for the reaction.

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  • 10. 

    PRIMARY STANDARD FOR PRECIPATION REACTION.....................

    • A.

      POTASSIUM HYDROGENPHTHALATE

    • B.

      COPPER

    • C.

      POTASSIUM CHLORIDE

    • D.

      POTASSIUM HYDROGENIODATE

    Correct Answer
    C. POTASSIUM CHLORIDE
    Explanation
    Potassium chloride is the primary standard for precipitation reaction because it is a stable compound that can be easily obtained in a pure form. It is also soluble in water, allowing for accurate measurements and calculations. Additionally, potassium chloride is non-toxic and does not react with other substances in the solution, making it an ideal choice for standardizing precipitation reactions.

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  • 11. 

    PRIMARY STANDARD FOR OXIDATION-REDUCTION TITRATION..................

    • A.

      SODIUM OXALATE

    • B.

      POTASSIUM BROMIDE

    • C.

      SALTS

    • D.

      SODIUM CARBONATE

    Correct Answer
    A. SODIUM OXALATE
    Explanation
    Sodium oxalate is the primary standard for oxidation-reduction titration because it can be easily prepared in a pure form and has a known and stable composition. It can also be accurately weighed and dissolved in a solution, allowing for precise measurements during the titration process. Sodium oxalate is also a strong reducing agent, making it suitable for titrations involving oxidizing agents. Additionally, it does not react with atmospheric oxygen, which ensures the accuracy and reliability of the titration results.

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  • 12. 

    HYDRATED SALTS ARE NOT USED BECAUSE IT IS _____________

    Correct Answer
    DIFFICULT TO DRY
    Explanation
    Hydrated salts are not used because they are difficult to dry. This means that these salts contain water molecules within their crystal structure, making it challenging to remove the water and obtain the anhydrous form of the salt. The presence of water can affect the stability, purity, and properties of the salt, making it unsuitable for certain applications. Therefore, it is preferred to use anhydrous salts whenever possible.

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  • 13. 

    CHEMICAL NAME OF CRESOL RED (ACID) IS______________

    Correct Answer
    1-CRESOLSULPHONPHTHALEIN
    Explanation
    Cresol red (acid) is chemically known as 1-cresolsulphonphthalein.

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 13, 2012
    Quiz Created by
    Knoweducation
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