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Grade 11 Exam  >  Grade 11 Tests  >  Chemistry for Grade 11 (IGCSE)  >  Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Grade 11 MCQ

Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Grade 11 MCQ


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15 Questions MCQ Test Chemistry for Grade 11 (IGCSE) - Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance

Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance for Grade 11 2024 is part of Chemistry for Grade 11 (IGCSE) preparation. The Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance questions and answers have been prepared according to the Grade 11 exam syllabus.The Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance MCQs are made for Grade 11 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance below.
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Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 1
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How is the name of a salt determined?

Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 1
The name of a salt is determined by the reactants involved in its formation. It comprises two parts: the first part is derived from the metal, metal oxide, or metal carbonate used in the reaction, while the second part originates from the acid involved in the reaction. For instance, when sodium hydroxide reacts with hydrochloric acid, sodium chloride is produced.
Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 2
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What part of a salt's name is derived from the metal involved in its formation?

Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 2
The first part of a salt's name is derived from the metal, metal oxide, or metal carbonate involved in the reaction that leads to its formation. This naming convention helps identify the components involved in creating the salt.
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Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 3
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In the context of naming salts, what determines the second part of a salt's name?

Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 3
The second part of a salt's name is determined by the acid used in the reaction that leads to the salt's formation. This naming convention provides insight into both the acid and the metal components involved in the salt's composition.
Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 4
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In the process of preparing salts using Method A, what is the purpose of adding the insoluble metal, base, or carbonate gradually to the warm dilute acid and stirring until the base is in excess?
Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 4
The purpose of adding the insoluble metal, base, or carbonate gradually to the warm dilute acid and stirring until the base is in excess is to form a suspension of the base in the acid. This step ensures that the base is present in excess, which is crucial for the subsequent filtration process to remove the excess base. By achieving this suspension, it helps in the efficient separation of the excess base from the solution, facilitating the production of the desired salt crystals.
Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 5
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What is the purpose of using an indicator like thymolphthalein or methyl orange in the process of reacting a dilute acid with an alkali to prepare soluble salts?
Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 5
Indicators like thymolphthalein or methyl orange are used in the reaction between a dilute acid and an alkali to prepare soluble salts to indicate the endpoint of the reaction. These indicators change color at specific pH levels, helping to determine when the reaction is complete. This color change signifies the neutralization point, ensuring that the correct amount of acid has been added to the alkali.
Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 6
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Why is it important to heat the resulting solution in an evaporating basin during the preparation of soluble salts from a dilute acid and alkali?
Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 6
Heating the resulting solution in an evaporating basin serves the purpose of partially evaporating the solution, which leads to the formation of a saturated solution. This process helps in concentrating the solution by removing some solvent, usually water, and creating conditions favorable for the formation of crystals as excess solute precipitates out.
Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 7
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In the process of preparing soluble salts, why is it recommended to allow the solution to cool and crystals to form before decanting the excess liquid?
Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 7
Allowing the solution to cool and crystals to form before decanting the excess liquid is crucial to obtain pure crystals and separate them from the remaining liquid. This step ensures that the crystals are given adequate time to form without disturbance, and decanting helps in separating the solid (crystals) from the liquid, enabling the collection of pure crystals.
Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 8
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What is the primary purpose of calculating the volume of acid added during the preparation of soluble salts from a dilute acid and alkali?
Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 8
Calculating the volume of acid added is essential during the preparation of soluble salts to precisely measure the amount of acid needed for neutralization of the alkali. This calculation ensures that the reaction achieves the correct stoichiometry, where the acid and alkali react completely to form the desired soluble salt without excess acid remaining in the solution, leading to accurate and efficient preparation of the salt.
Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 9
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What is the term for salts that contain water within their structure?
Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 9
Hydrated salts are salts that contain water within their structure. This water affects the crystal's properties such as color and shape. An example of this is hydrated copper(II) sulfate, which appears blue due to the water in its structure. When heated, the water is expelled, transforming it into anhydrous copper(II) sulfate, which is white.
Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 10
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What happens to the color of copper(II) sulfate when it transitions from being hydrated to anhydrous?
Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 10
The color of copper(II) sulfate changes from blue in its hydrated form to white in its anhydrous form. This color change is a result of the removal of water from the crystal structure during the dehydration process.
Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 11
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What term is used to describe water molecules present in certain salts during crystallization?
Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 11
Water of hydration refers to the water molecules present in certain salts during crystallization. This water is essential for the formation of hydrated compounds and plays a crucial role in the structure and properties of these compounds.
Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 12
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How is the presence of water of crystallization indicated in the chemical formula of hydrated compounds?
Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 12
The presence of water of crystallization in the chemical formula of hydrated compounds is denoted by a dot (·). For example, in hydrated copper(II) sulfate, CuSO4 · 5H2O, the dot signifies the presence of water molecules within the compound's structure.
Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 13
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How can the reaction between hydrated and anhydrous copper(II) sulfate be reversed?
Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 13
The reaction between hydrated and anhydrous copper(II) sulfate can be reversed by introducing water to the anhydrous salt. This process leads to the formation of hydrated copper(II) sulfate from anhydrous copper(II) sulfate, demonstrating the reversible nature of hydration and dehydration in salts.
Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 14
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Which type of compound lacks water of crystallization?
Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 14
An anhydrous compound is a substance that lacks water of crystallization. Unlike hydrated compounds that contain water molecules in their structure, anhydrous compounds do not have water present within their chemical composition.
Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 15
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What is the process called when water is removed from a hydrated salt to form an anhydrous salt?
Detailed Solution for Test: Preparation of Soluble Salts & Solubility Rules for Salts & Hydrous and Anhydrous Substance - Question 15
The process of removing water from a hydrated salt to form an anhydrous salt is known as dehydration. This process involves heating the hydrated salt to expel the water molecules from its crystal structure.
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