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High School Acids & Bases Trivia Quiz

A collections of questions about acids and bases.

A multiple-choice quiz by chonkbobwhoa. Estimated time: 4 mins.

Author
chonkbobwhoa

Time
4 mins

Type
Multiple Choice

Quiz #
305,548

Updated
Dec 03 21

# Qns
10

Difficulty
Average

Avg Score
6 / 10

Plays
4273

Last 3 plays: Guest 74 (1/10), Guest 137 (8/10), Guest 73 (1/10).

One at a Time - Single Page - Timed Game

Question 1 of 10

1. What is an Arrhenius Acid? Hint

A substance which is water soluble

A substance which releases hydrogen ions in water

A substance which releases hydroxide ions in water

A substance with a pH greater than 7

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Question 2 of 10

2. Which of the following typically readily react with metals? Hint

Bases

Any substance with a pH greater than 7

Both acids and bases

Acids

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Question 3 of 10

3. What is the pH of water at 25 degrees c? Hint

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Question 4 of 10

4. When you add pH to pOH you always get _________.

Answer: (Two digit number)

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Question 5 of 10

5. What is an amphiprotic substance? Hint

A monoprotic base

A substance that only exists in an aqueous form

A substance that acts both as an acid and a base

An organic acid

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Question 6 of 10

6. What does a strong base do in solution? Hint

becomes fully ionized

establishes an equilibrium

causes the solution to become charged

it varies depending on the solutions contents

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Question 7 of 10

7. What is the range of pH for a acid? Hint

greater than 7

greater than or equal to 7

less than or equal to 7

less than 7

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Question 8 of 10

8. What is an equivalence point? Hint

The point where mol H+ =mol OH-

The point where a substance becomes neutral

The point where an indicator changes colours

All of the above

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Question 9 of 10

9. What is Kw? Hint

An element

The ionization constant for water

An alternative measurement scale for pH

A buffer solution

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Question 10 of 10

10. What is a buffer solution? Hint

A solution that resists pH changes

A solution that measures pH

A solution that changes pH quickly

Any basic solution

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Nov 21 2024 : Guest 74: 1/10
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Quiz Answer Key and Fun Facts

1. What is an Arrhenius Acid?

Answer: A substance which releases hydrogen ions in water

All Arrhenius Acids start with an H and are ionic substances. Common examples include HCl (hydrogen chloride) and HBr (hydrogen bromide).

2. Which of the following typically readily react with metals?

Answer: Acids

Acids react with metals, while bases generally do not (there are some exceptions). When acids react with metals they often release hydrogen gas.

3. What is the pH of water at 25 degrees c?

Answer: 7

Water is a neutral substance with an equal proportion of hydrogen and hydroxide ions in solution. At different temperatures the pH of water can vary, but it will always remain neutral.

4. When you add pH to pOH you always get _________.

Answer: 14

When the pH is known you can subtract it from fourteen to find the pOH. This information can be used to calculate concentration of ions.

5. What is an amphiprotic substance?

Answer: A substance that acts both as an acid and a base

An amphiprotic substance can either donate a proton, or accept a proton. This ability allows it to be defined both as an acid and a base.

6. What does a strong base do in solution?

Answer: becomes fully ionized

A strong base will become 100% ionized in solution, and a strong acid will fully dissociated in solution. Weak acids and bases set up an equilibrium where they don't fully dissociate.

7. What is the range of pH for a acid?

Answer: less than 7

Although the majority of substances will have a pH that falls between 0 and 14, there are some that fall outside of this range. Acidic substances are less than 7 and neutral substances have a pH of 7, while basic substances have a pH greater than 7.

8. What is an equivalence point?

Answer: The point where mol H+ =mol OH-

The equivalence point is also known as a stiochiometric point. It occurs when two substances are mixed until such time that the moles of hydrogen and hydroxide ions are equal.

9. What is Kw?

Answer: The ionization constant for water

Kw is equal to the concentration of hydrogen multiplied by the concentration of hydroxide. At 25 degrees C it is equivalent to 1.0 x 10^14.

10. What is a buffer solution?

Answer: A solution that resists pH changes

A buffer solution is designed to maintain a constant pH with the addition of small ammounts of acids or bases. They are made up of a weak acid and the soluble salt of its conjugate base or a weak base and the soluble salt of its conjugate acid.

Source: Author chonkbobwhoa

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