Identifying Acids and Bases Quiz
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Questions and Answers

What ions are released when a base dissociates in water?

  • Na+
  • H+
  • Cl-
  • OH- (correct)

    • Which acid is commonly found in the stomach?

  • HCl (correct)
  • HNO3
  • CH3COOH
  • H2SO4

    • What does pH stand for?

  • Potential of Hydrogen (correct)
  • Positive Hydroxide
  • Peroxide Hydrogen
  • Polarizing Hydrogen
  • Polarized Hydroxide

    • What is the characteristic taste of bases?

    <p>Bitter (B)</p> Signup and view all the answers

    What process is used to determine the concentration of an acid or a base?

    <p>Titration (D)</p> Signup and view all the answers

    What type of gas is produced when an acid reacts with carbonates?

    <p>$CO_2$ (B)</p> Signup and view all the answers

    What type of test is used to confirm the presence of carbon dioxide gas?

    <p>Limewater test (C)</p> Signup and view all the answers

    What does the pH scale measure?

    <p>Concentration of hydrogen ions (A)</p> Signup and view all the answers

    What ions are released when an acid dissociates in water?

    <p>H+ (C)</p> Signup and view all the answers

    What is the molar ratio between HBr and NaOH in the reaction HBr + NaOH → NaBr + H2O?

    <p>1:1:1:1 (C)</p> Signup and view all the answers

    What are the products of the reaction between H2SO4 and Mg(OH)2?

    <p>MgSO4 + 2H2O (D)</p> Signup and view all the answers

    Which substance falls on the pH scale as a base?

    <p>Bleach (contains ClO-) (C)</p> Signup and view all the answers

    Which of the following is considered an acid?

    <p>Milk (contains CH3CH2COOH) (C)</p> Signup and view all the answers

    What is the effect of bases on pH?

    <p>Increase in pH (C)</p> Signup and view all the answers

    Which of the following release H+ ions into solution?

    <p>Hydrogen chloride (HCl) (C)</p> Signup and view all the answers

    What is the pH nature of tap water and rain water?

    <p>Neutral (A)</p> Signup and view all the answers

    Which of the following substances indirectly increase OH- ions by removing H+ ions from water?

    <p>Bleach (contains ClO-) (B)</p> Signup and view all the answers

    What is the correct name for the covalent compound H2O?

    <p>Dihydrogen oxide (B)</p> Signup and view all the answers

    What is the correct name for the ionic compound NaCl?

    <p>Sodium chloride (B)</p> Signup and view all the answers

    What is the charge of the iron ion when it forms Fe2+?

    <p>Iron(II) ion (D)</p> Signup and view all the answers

    What is the charge of the iron ion when it forms Fe3+?

    <p>Iron(III) ion (B)</p> Signup and view all the answers

    What is the correct name for the ionic compound CaCO3?

    <p>Calcium carbonate (C)</p> Signup and view all the answers

    What is the charge of the magnesium ion in MgCl2?

    <p>+2 (A)</p> Signup and view all the answers

    What is the correct name for the covalent compound HCl?

    <p>Hydrogen chloride (B)</p> Signup and view all the answers

    What is the correct name for the covalent compound CO2?

    <p>(Di)carbon dioxide (B)</p> Signup and view all the answers

    What is the charge on a sodium ion (Na+)?

    <p>+1 (D)</p> Signup and view all the answers

    What is the charge on a calcium ion (Ca2+)?

    <p>+2 (C)</p> Signup and view all the answers

    What is the charge on a chloride ion (Cl-) ?

    <p>-1 (A)</p> Signup and view all the answers

    Flashcards

    Base dissociation in water

    Releases OH- ions in solution.

    Stomach acid

    Common acid found in the stomach is HCl.

    What is pH?

    Stands for 'Potential of Hydrogen'.

    Taste of bases

    Bases are characterized by a bitter taste.

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    Determining acid/base concentration

    The process used is called titration.

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    Acid and carbonates reaction

    Produces CO2 gas when they react.

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    Confirming CO2 presence

    Use the limewater test to confirm.

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    What does the pH scale measure?

    Measures the concentration of hydrogen ions.

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    Acid dissociation in water

    Releases H+ ions into solution.

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    HBr and NaOH reaction ratio

    The molar ratio is 1:1:1:1.

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    Products of H2SO4 and Mg(OH)2 reaction

    Produces MgSO4 and 2H2O.

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    Base on pH scale

    Bleach is a common base (contains ClO-).

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    Identifying an acid

    Milk is considered an acid (contains CH3CH2COOH).

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    Effect of bases on pH

    Bases result in an increase in pH.

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    Substances releasing H+ ions

    Hydrogen chloride (HCl) releases H+ ions.

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    pH nature of tap water

    Tap water and rain water are neutral.

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    Substances that increase OH- ions

    Bleach increases OH- indirectly.

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    Dihydrogen oxide

    Correct name for the covalent compound H2O.

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    Sodium chloride

    Correct name for the ionic compound NaCl.

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    Iron(II) ion

    Formed when iron has a +2 charge.

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    Iron(III) ion

    Formed when iron has a +3 charge.

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    Calcium carbonate

    Correct name for the ionic compound CaCO3.

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    Charge of magnesium ion

    Magnesium in MgCl2 has a +2 charge.

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    Hydrogen chloride

    Correct name for the covalent compound HCl.

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    Carbon dioxide

    Correct name for the covalent compound CO2.

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    Charge of sodium ion

    Sodium ions (Na+) have a +1 charge.

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    Charge of calcium ion

    Calcium ions (Ca2+) have a +2 charge.

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    Charge of chloride ion

    Chloride ions (Cl-) have a -1 charge.

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    Study Notes

    Acid-Base Chemistry

    • When a base dissociates in water, OH- ions are released.
    • Hydrochloric acid (HCl) is commonly found in the stomach.
    • pH stands for "potential of hydrogen," which is a measure of the concentration of hydrogen ions in a solution.

    Taste of Acids and Bases

    • The characteristic taste of bases is bitter.
    • Acids have a sour taste.

    Determining Concentration of Acids and Bases

    • The process of titration is used to determine the concentration of an acid or a base.

    Reaction with Carbonates

    • When an acid reacts with carbonates, carbon dioxide gas is produced.
    • A limewater test is used to confirm the presence of carbon dioxide gas.

    pH Scale

    • The pH scale measures the concentration of hydrogen ions in a solution.
    • A pH below 7 is acidic, while a pH above 7 is basic.

    Acids and Bases in Water

    • When an acid dissociates in water, H+ ions are released.
    • Substances with a pH above 7, such as NaOH, are bases.

    Reactions

    • The molar ratio between HBr and NaOH in the reaction HBr + NaOH → NaBr + H2O is 1:1.
    • The products of the reaction between H2SO4 and Mg(OH)2 are MgSO4 and H2O.

    Acid-Base Characteristics

    • Acids release H+ ions into solution, increasing the pH.
    • Bases increase OH- ions, decreasing the pH.
    • Tap water and rainwater have a neutral pH, around 7.

    Substances and Ions

    • Water (H2O) is a covalent compound.
    • Sodium chloride (NaCl) is an ionic compound.
    • The iron ion has a charge of +2 (Fe2+) or +3 (Fe3+).
    • Calcium carbonate (CaCO3) is an ionic compound.
    • The magnesium ion has a charge of +2 in MgCl2.
    • Hydrogen chloride (HCl) is a covalent compound.
    • Carbon dioxide (CO2) is a covalent compound.
    • Sodium ions (Na+) have a charge of +1.
    • Calcium ions (Ca2+) have a charge of +2.
    • Chloride ions (Cl-) have a charge of -1.

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    Related Documents

    Acids and Bases PDF

    Description

    Test your knowledge on identifying acids and bases by determining where different substances fall on the pH scale. The quiz covers substances such as tap water, hydrogen chloride, sodium hydroxide, Coke, bleach, milk, and soap, and also includes classification of acids and bases.

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