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Saturated solution of KNO3 is used to make ‘salt-bridge’ because:
- a)Velocity of K+ is greater than that of NO3-
- b)Velocity NO3- is greater than that of K+
- c)Velocities of both K+ and NO3- are nearly the same
- d)KNO3 is highly soluble in water
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Saturated solution of KNO3 is used to make ‘salt-bridge’ b...
Explanation for the Use of Saturated KNO3 Solution for Salt-Bridge
- The primary purpose of a salt bridge is to maintain electrical neutrality within the internal circuit of an electrochemical cell. It allows the migration of ions to balance the charge during the redox reactions.
- A saturated solution of KNO3 is often used to make a salt bridge because of the similar velocities of K+ (potassium ions) and NO3- (nitrate ions) which helps maintain electrical neutrality in the cell, and prevents cell polarization.
Most Upvoted Answer
Saturated solution of KNO3 is used to make ‘salt-bridge’ b...
A homemade hand warmer. When the KNO3 is dissolved in water, it absorbs heat, making the solution cold. However, when the solution is exposed to air, the water evaporates, leaving behind solid KNO3 crystals and releasing heat. This exothermic reaction creates a heat source that can be used to warm hands or other body parts.
To make the hand warmer, you will need:
- KNO3 (potassium nitrate)
- Water
- Two sealable plastic bags (one larger and one smaller)
- A measuring cup
- A spoon
- A thermometer
Instructions:
1. Measure out 100 grams of KNO3 and pour it into the larger plastic bag.
2. Add 50 milliliters of water to the bag and seal it tightly.
3. Use your hands to mix the KNO3 and water together until the KNO3 is completely dissolved.
4. Place the bag in the refrigerator and let it chill for at least 30 minutes.
5. Once the solution is cold, remove it from the refrigerator and use the thermometer to check the temperature. It should be around 0°C (32°F).
6. Pour the solution into the smaller plastic bag and seal it tightly.
7. Place the smaller bag inside the larger bag and seal it tightly as well.
8. Massage the bags with your hands to mix the solution and activate the reaction.
9. The bags will start to warm up quickly and provide heat for up to an hour.
Caution: Potassium nitrate can be dangerous if ingested or inhaled. Use caution when handling and storing the chemicals, and do not puncture or open the plastic bags.
To make the hand warmer, you will need:
- KNO3 (potassium nitrate)
- Water
- Two sealable plastic bags (one larger and one smaller)
- A measuring cup
- A spoon
- A thermometer
Instructions:
1. Measure out 100 grams of KNO3 and pour it into the larger plastic bag.
2. Add 50 milliliters of water to the bag and seal it tightly.
3. Use your hands to mix the KNO3 and water together until the KNO3 is completely dissolved.
4. Place the bag in the refrigerator and let it chill for at least 30 minutes.
5. Once the solution is cold, remove it from the refrigerator and use the thermometer to check the temperature. It should be around 0°C (32°F).
6. Pour the solution into the smaller plastic bag and seal it tightly.
7. Place the smaller bag inside the larger bag and seal it tightly as well.
8. Massage the bags with your hands to mix the solution and activate the reaction.
9. The bags will start to warm up quickly and provide heat for up to an hour.
Caution: Potassium nitrate can be dangerous if ingested or inhaled. Use caution when handling and storing the chemicals, and do not puncture or open the plastic bags.
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Saturated solution of KNO3 is used to make ‘salt-bridge’ b...
Because...
if they are having same velocities , it will make the solution all time balanced for charge in both side of the cell ..
so KNO3 is used as salt bridge....
if they are having same velocities , it will make the solution all time balanced for charge in both side of the cell ..
so KNO3 is used as salt bridge....
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Saturated solution of KNO3 is used to make ‘salt-bridge’ because:a)Velocity of K+ is greater than that of NO3-b)Velocity NO3- is greater than that of K+c)Velocities of both K+ and NO3- are nearly the same d)KNO3 is highly soluble in waterCorrect answer is option 'C'. Can you explain this answer? for Chemistry 2025 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Saturated solution of KNO3 is used to make ‘salt-bridge’ because:a)Velocity of K+ is greater than that of NO3-b)Velocity NO3- is greater than that of K+c)Velocities of both K+ and NO3- are nearly the same d)KNO3 is highly soluble in waterCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemistry 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Saturated solution of KNO3 is used to make ‘salt-bridge’ because:a)Velocity of K+ is greater than that of NO3-b)Velocity NO3- is greater than that of K+c)Velocities of both K+ and NO3- are nearly the same d)KNO3 is highly soluble in waterCorrect answer is option 'C'. Can you explain this answer?.
Saturated solution of KNO3 is used to make ‘salt-bridge’ because:a)Velocity of K+ is greater than that of NO3-b)Velocity NO3- is greater than that of K+c)Velocities of both K+ and NO3- are nearly the same d)KNO3 is highly soluble in waterCorrect answer is option 'C'. Can you explain this answer? for Chemistry 2025 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Saturated solution of KNO3 is used to make ‘salt-bridge’ because:a)Velocity of K+ is greater than that of NO3-b)Velocity NO3- is greater than that of K+c)Velocities of both K+ and NO3- are nearly the same d)KNO3 is highly soluble in waterCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemistry 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Saturated solution of KNO3 is used to make ‘salt-bridge’ because:a)Velocity of K+ is greater than that of NO3-b)Velocity NO3- is greater than that of K+c)Velocities of both K+ and NO3- are nearly the same d)KNO3 is highly soluble in waterCorrect answer is option 'C'. Can you explain this answer?.
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Saturated solution of KNO3 is used to make ‘salt-bridge’ because:a)Velocity of K+ is greater than that of NO3-b)Velocity NO3- is greater than that of K+c)Velocities of both K+ and NO3- are nearly the same d)KNO3 is highly soluble in waterCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Saturated solution of KNO3 is used to make ‘salt-bridge’ because:a)Velocity of K+ is greater than that of NO3-b)Velocity NO3- is greater than that of K+c)Velocities of both K+ and NO3- are nearly the same d)KNO3 is highly soluble in waterCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Saturated solution of KNO3 is used to make ‘salt-bridge’ because:a)Velocity of K+ is greater than that of NO3-b)Velocity NO3- is greater than that of K+c)Velocities of both K+ and NO3- are nearly the same d)KNO3 is highly soluble in waterCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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