BPSC (Bihar) Exam > BPSC (Bihar) Questions > Consider the following statements :1. Additio...
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Consider the following statements :
1. Addition of salt to pure water increases the boiling point of water and decreases the freezing point of water.
2. When methyl alcohol is added to water boiling point of water decreases.
Which of the above statements is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Salt and methyl alcohol are same in behaviour
- e)None of the above/More than one of the above
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements :1. Addition of salt to pure water i...
Explanation:
1. Addition of salt to pure water:
- When salt is added to pure water, it disrupts the hydrogen bonding between water molecules.
- This disruption leads to an increase in the boiling point of water, as the presence of salt requires more energy to break the bonds and reach the boiling point.
- Additionally, the presence of salt also decreases the freezing point of water, as the salt ions interfere with the formation of ice crystals.
2. Addition of methyl alcohol to water:
- Methyl alcohol, also known as methanol, is a compound that can disrupt the hydrogen bonding between water molecules.
- When methyl alcohol is added to water, it reduces the overall strength of the hydrogen bonds, leading to a decrease in the boiling point of water.
- This decrease occurs because the presence of methyl alcohol makes it easier for water molecules to break free from the liquid phase and vaporize.
Conclusion:
Both statements 1 and 2 are correct. The addition of salt to water increases the boiling point and decreases the freezing point, while the addition of methyl alcohol decreases the boiling point of water.
1. Addition of salt to pure water:
- When salt is added to pure water, it disrupts the hydrogen bonding between water molecules.
- This disruption leads to an increase in the boiling point of water, as the presence of salt requires more energy to break the bonds and reach the boiling point.
- Additionally, the presence of salt also decreases the freezing point of water, as the salt ions interfere with the formation of ice crystals.
2. Addition of methyl alcohol to water:
- Methyl alcohol, also known as methanol, is a compound that can disrupt the hydrogen bonding between water molecules.
- When methyl alcohol is added to water, it reduces the overall strength of the hydrogen bonds, leading to a decrease in the boiling point of water.
- This decrease occurs because the presence of methyl alcohol makes it easier for water molecules to break free from the liquid phase and vaporize.
Conclusion:
Both statements 1 and 2 are correct. The addition of salt to water increases the boiling point and decreases the freezing point, while the addition of methyl alcohol decreases the boiling point of water.
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Community Answer
Consider the following statements :1. Addition of salt to pure water i...
- Salt changes the freezing point of water, and causes the water to reach a lower temperature in order to freeze.Because salt particles make it harder for water particles to freeze back onto the ice, the ice that is in contact with dissolved salt melts faster. When the saltwater flows over the surface it melts the ice on its way, creating channels, like rivers, over the surface of the ice ball.
- Adding salt to boiling water actually increases the boiling point temperature of the water. This process is called boiling point elevation. When you add a solute like salt to a solvent like water, it makes water an impure solvent and raises its boiling point above that of pure solvents. Hence, statement 1 is correct.
- When methyl alcohol is added to water, boiling point of water decreases due to hydrogen bonding and when a volatile solute is added to a volatile solvent elevation in boiling point is observed. Hence, statement 2 is correct.
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Consider the following statements :1. Addition of salt to pure water increases the boiling point of water and decreases the freezing point of water.2. When methyl alcohol is added to water boiling point of water decreases.Which of the above statements is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Salt and methyl alcohol are same in behavioure)None of the above/More than one of the aboveCorrect answer is option 'C'. Can you explain this answer?
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Consider the following statements :1. Addition of salt to pure water increases the boiling point of water and decreases the freezing point of water.2. When methyl alcohol is added to water boiling point of water decreases.Which of the above statements is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Salt and methyl alcohol are same in behavioure)None of the above/More than one of the aboveCorrect answer is option 'C'. Can you explain this answer? for BPSC (Bihar) 2024 is part of BPSC (Bihar) preparation. The Question and answers have been prepared according to the BPSC (Bihar) exam syllabus. Information about Consider the following statements :1. Addition of salt to pure water increases the boiling point of water and decreases the freezing point of water.2. When methyl alcohol is added to water boiling point of water decreases.Which of the above statements is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Salt and methyl alcohol are same in behavioure)None of the above/More than one of the aboveCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for BPSC (Bihar) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements :1. Addition of salt to pure water increases the boiling point of water and decreases the freezing point of water.2. When methyl alcohol is added to water boiling point of water decreases.Which of the above statements is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Salt and methyl alcohol are same in behavioure)None of the above/More than one of the aboveCorrect answer is option 'C'. Can you explain this answer?.
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