Can You Identify Acids And Bases?
Different acids and bases have different have different colors and the different kinds of reactions they undergo. HCl, a popular acid is colorless in nature therefore can u identify other acids and bases?
- 1.
Which is the correct set of acid properties
- A.
Sour taste, corrosive, change litmus from red to blue
- B.
Sour taste, corrosive, change litmus from blue to red
- C.
Sweet taste, slippery, change litmus from blue to red
- D.
Sour taste, slippery, change litmus from blue to red
Correct Answer
B. Sour taste, corrosive, change litmus from blue to redExplanation
The correct answer is "sour taste, corrosive, change litmus from blue to red." Acids typically have a sour taste, are corrosive (meaning they can cause damage or destruction), and they change the color of litmus paper from blue to red.Rate this question:
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- 2.
What does pH measure?
- A.
The amount of H+ ions in a solution
- B.
The amount of acid molecules in a solution
- C.
The electron shell configuration of the solution
- D.
What colour the solution is
Correct Answer
A. The amount of H+ ions in a solutionExplanation
pH measures the amount of H+ ions in a solution. This is because pH is a measure of the acidity or alkalinity of a solution, and H+ ions are responsible for the acidity of a solution. The concentration of H+ ions determines the pH value, with a higher concentration of H+ ions indicating a lower pH (more acidic) and a lower concentration indicating a higher pH (more alkaline). Therefore, pH is used as a quantitative measure of the acidity or alkalinity of a solution based on the amount of H+ ions present.Rate this question:
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- 3.
When an acid reacts with a base it will always produce:
- A.
Hydrogen Gas + Salt
- B.
Carbon Dioxide + Water + Salt
- C.
Salt + Water
- D.
Nothing
Correct Answer
C. Salt + WaterExplanation
When an acid reacts with a base, it will always produce salt and water. This is because acids and bases neutralize each other, resulting in the formation of a salt and water as the products. The salt is formed from the combination of the positive ions from the base and the negative ions from the acid. Water is also produced as a result of this reaction. Therefore, the correct answer is salt + water.Rate this question:
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- 4.
Complete the reaction: Hydrocholric Acid + Magnesium -> Hydrogen Gas + _____________
- A.
Magnesium Hydride
- B.
Hydrogen Magnesium
- C.
Magnesium Chloride
- D.
Dihydrogen Chloride
Correct Answer
C. Magnesium ChlorideExplanation
When hydrochloric acid reacts with magnesium, it forms magnesium chloride and hydrogen gas. This is a typical example of a single displacement reaction, where the more reactive magnesium displaces hydrogen from the hydrochloric acid. Magnesium chloride is formed as a result of the reaction, while hydrogen gas is released.Rate this question:
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- 5.
Adding an Acid to a Base is called
- A.
Reaction
- B.
Displacement
- C.
PH
- D.
Neutralisation
Correct Answer
D. NeutralisationExplanation
When an acid is added to a base, a neutralization reaction occurs. This reaction results in the formation of water and a salt. The acid donates hydrogen ions (H+) to the base, which accepts these ions. This process neutralizes the acidic and basic properties, resulting in a solution that is neither acidic nor basic, but rather neutral. Therefore, the correct answer is neutralization.Rate this question:
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- 6.
What are some of the disadvantages of using an indicator?
- A.
Colour changes may not be easy to see
- B.
Colour change doesn't always happen
- C.
Different solutions have different colour changes
- D.
Very expensive
Correct Answer
A. Colour changes may not be easy to seeExplanation
The use of an indicator may have the disadvantage that the color changes associated with it may not be easily visible. This can make it difficult to accurately determine the endpoint or the completion of a reaction.Rate this question:
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- 7.
Examine the image below of colour changes using universal indicator: What colour indicates a very strong acid?
- A.
Yellow
- B.
Orange
- C.
Purple
- D.
Green
Correct Answer
B. OrangeExplanation
Orange indicates a very strong acid. This is because universal indicator is a pH indicator that changes color based on the acidity or alkalinity of a solution. Orange color indicates a pH level of around 1-2, which is highly acidic. Therefore, orange is the correct answer for a very strong acid.Rate this question:
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- 8.
Examine the image below of colour changes using universal indicator: Which colour indicates a very strong Base?
- A.
Yellow
- B.
Orange
- C.
Purple
- D.
Green
Correct Answer
C. PurpleExplanation
In the image, purple is shown as the color that indicates a very strong base. This is because universal indicator changes color based on the pH level of a substance, with purple indicating a high pH level. In the pH scale, a high pH level corresponds to a strong base, so the purple color suggests that the substance being tested is a very strong base.Rate this question:
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- 9.
Which of the following statements is true concerning acids and bases
- A.
Acids and bases don't react with each other
- B.
Acids mixed with bases neutralize each other
- C.
Acids mixed with bases make stronger bases
- D.
Acids mixed with bases make stronger acids
Correct Answer
B. Acids mixed with bases neutralize each otherExplanation
When acids and bases are mixed together, they undergo a chemical reaction called neutralization. During this reaction, the acidic and basic properties of the substances are neutralized, resulting in the formation of a salt and water. This is why the statement "acids mixed with bases neutralize each other" is true.Rate this question:
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- 10.
If a substance has more OH- ions it is considered a ___________ ?
- A.
Acid
- B.
Base
- C.
Neutral
- D.
PH
Correct Answer
B. BaseExplanation
If a substance has more OH- ions, it is considered a base. This is because bases are substances that release hydroxide ions (OH-) in water. These hydroxide ions then react with hydrogen ions (H+) to form water. Therefore, a substance with more OH- ions indicates a higher concentration of hydroxide ions, which classifies it as a base.Rate this question:
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Mar 19, 2023Quiz Edited by
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May 17, 2019Quiz Created by
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