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ACT Exam  >  ACT Questions  >  A proton donor is a _________ substance.a)pro... Start Learning for Free
A proton donor is a _________ substance.
  • a)
    protongenic
  • b)
    protophilic
  • c)
    amphoteric
  • d)
    amphiprotic
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
A proton donor is a _________ substance.a)protongenicb)protophilicc)am...
According to the bronsted concept of acids and bases, an acid that is a Proton Donor is proton genic and a base that is a Proton acceptor is protophilic, while an amphoteric substance is both base and acid.
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A proton donor is a _________ substance.a)protongenicb)protophilicc)am...
Proton Donor Explanation:
Proton donors are substances that are capable of donating a proton (H+ ion) in a chemical reaction. This process is essential in acid-base chemistry and is commonly seen in reactions involving acids.

Protongenic Substance:
- A protonic substance is often referred to as protogenic.
- Protogenic substances have the ability to donate protons, making them proton donors.
- They play a crucial role in acid-base reactions by releasing protons to react with other substances.

Example:
- One common example of a protogenic substance is hydrochloric acid (HCl).
- In a solution of HCl, the hydrogen atom can dissociate from the chloride ion, resulting in the donation of a proton.

Significance:
- Understanding proton donors is essential in the study of acid-base chemistry.
- Proton donors help in identifying the acidic nature of a substance and predicting its behavior in chemical reactions.
- They are integral to the concept of pH and the measurement of acidity in solutions.
In conclusion, a proton donor is a protogenic substance that has the ability to donate protons in chemical reactions, playing a key role in acid-base chemistry.
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Two scientists wanted to test the solubility of different substances. Solubility is a measure of how many moles of a given substance (known as the solut e) can dissolve in a given volume of another substance (known as the solvent). The solvent can also be thought of as the substance present in greater amount, while the solute can be seen as the substance present in lesser amount. The scientists performed the following experiments to investigate this property.Experiment 1The scientists tested the number of moles of several substances that could be completely dissolved in 50mL of water at various temperatures. They made their solutions by slowly adding amounts of each substance to beakers sitting on a hot plate containing water and a stirring rod until no more of the substance dissolved in the solution. The beakers were weighed before and after the additions and the difference in mass was calculated to be the added mass of the substance. The researchers then calculated the number of moles that dissolved for each trial using the molecular mass and the recorded mass for each trial. Results are recorded in Table 1.Table 1Experiment 2In this experiment, the scientists wanted to test the solubility of NaCl in a variety of liquids at several temperatures. Their procedure was similar to that of Experiment 1, but with a range of liquids and only one solid. The results are compiled in Table 2.Table 2Q.In Experiment 2, which of the following combinations of temperature and solvent dissolved the greatest number of moles of NaCl?

Two scientists wanted to test the solubility of different substances. Solubility is a measure of how many moles of a given substance (known as the solut e) can dissolve in a given volume of another substance (known as the solvent). The solvent can also be thought of as the substance present in greater amount, while the solute can be seen as the substance present in lesser amount. The scientists performed the following experiments to investigate this property.Experiment 1The scientists tested the number of moles of several substances that could be completely dissolved in 50mL of water at various temperatures. They made their solutions by slowly adding amounts of each substance to beakers sitting on a hot plate containing water and a stirring rod until no more of the substance dissolved in the solution. The beakers were weighed before and after the additions and the difference in mass was calculated to be the added mass of the substance. The researchers then calculated the number of moles that dissolved for each trial using the molecular mass and the recorded mass for each trial. Results are recorded in Table 1.Table 1Experiment 2In this experiment, the scientists wanted to test the solubility of NaCl in a variety of liquids at several temperatures. Their procedure was similar to that of Experiment 1, but with a range of liquids and only one solid. The results are compiled in Table 2.Table 2Q.Which of the following correctly ranks the solutes from Experiment 1 in decreasing order of solubility in water at 50C?

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A proton donor is a _________ substance.a)protongenicb)protophilicc)amphotericd)amphiproticCorrect answer is option 'A'. Can you explain this answer?
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