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Questions and Answers
What ions are released when a base dissociates in water?
What ions are released when a base dissociates in water?
Which acid is commonly found in the stomach?
Which acid is commonly found in the stomach?
What does pH stand for?
What does pH stand for?
What is the characteristic taste of bases?
What is the characteristic taste of bases?
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What process is used to determine the concentration of an acid or a base?
What process is used to determine the concentration of an acid or a base?
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What type of gas is produced when an acid reacts with carbonates?
What type of gas is produced when an acid reacts with carbonates?
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What type of test is used to confirm the presence of carbon dioxide gas?
What type of test is used to confirm the presence of carbon dioxide gas?
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What does the pH scale measure?
What does the pH scale measure?
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What ions are released when an acid dissociates in water?
What ions are released when an acid dissociates in water?
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What is the molar ratio between HBr and NaOH in the reaction HBr + NaOH → NaBr + H2O?
What is the molar ratio between HBr and NaOH in the reaction HBr + NaOH → NaBr + H2O?
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What are the products of the reaction between H2SO4 and Mg(OH)2?
What are the products of the reaction between H2SO4 and Mg(OH)2?
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Which substance falls on the pH scale as a base?
Which substance falls on the pH scale as a base?
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Which of the following is considered an acid?
Which of the following is considered an acid?
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What is the effect of bases on pH?
What is the effect of bases on pH?
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Which of the following release H+ ions into solution?
Which of the following release H+ ions into solution?
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What is the pH nature of tap water and rain water?
What is the pH nature of tap water and rain water?
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Which of the following substances indirectly increase OH- ions by removing H+ ions from water?
Which of the following substances indirectly increase OH- ions by removing H+ ions from water?
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What is the correct name for the covalent compound H2O?
What is the correct name for the covalent compound H2O?
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What is the correct name for the ionic compound NaCl?
What is the correct name for the ionic compound NaCl?
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What is the charge of the iron ion when it forms Fe2+?
What is the charge of the iron ion when it forms Fe2+?
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What is the charge of the iron ion when it forms Fe3+?
What is the charge of the iron ion when it forms Fe3+?
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What is the correct name for the ionic compound CaCO3?
What is the correct name for the ionic compound CaCO3?
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What is the charge of the magnesium ion in MgCl2?
What is the charge of the magnesium ion in MgCl2?
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What is the correct name for the covalent compound HCl?
What is the correct name for the covalent compound HCl?
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What is the correct name for the covalent compound CO2?
What is the correct name for the covalent compound CO2?
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What is the charge on a sodium ion (Na+)?
What is the charge on a sodium ion (Na+)?
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What is the charge on a calcium ion (Ca2+)?
What is the charge on a calcium ion (Ca2+)?
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What is the charge on a chloride ion (Cl-) ?
What is the charge on a chloride ion (Cl-) ?
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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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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.
