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Number of moles of hydroxide ions in 0.3L of 0.005M solution of Ba (OH)2 is:
- a)0.0015
- b)0.003
- c)0.0050
- d)0.0075
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Number of moles of hydroxide ions in 0.3L of 0.005M solution of Ba (OH...
0.3 L = 0.3 L of 0.005 M Ba(OH)2
0.3 x 0.005 = 0.0015 moles of Ba(OH)2
It will dissociate into 0.0015 moles of Ba and 2 x 0.0015 = 0.003 moles of OH ions.
0.3 x 0.005 = 0.0015 moles of Ba(OH)2
It will dissociate into 0.0015 moles of Ba and 2 x 0.0015 = 0.003 moles of OH ions.
Most Upvoted Answer
Number of moles of hydroxide ions in 0.3L of 0.005M solution of Ba (OH...
Understanding the Problem
To calculate the number of moles of hydroxide ions in a solution of barium hydroxide (Ba(OH)2), we need to consider both the concentration of the solution and the dissociation of Ba(OH)2 in water.
Dissociation of Barium Hydroxide
- Barium hydroxide, Ba(OH)2, dissociates in water as follows:
- Ba(OH)2 → Ba²⁺ + 2OH⁻
- This means that for every one mole of Ba(OH)2 that dissolves, it produces two moles of hydroxide ions (OH⁻).
Calculating Moles of Ba(OH)2
- We are given:
- Volume of the solution = 0.3 L
- Molarity (M) = 0.005 M
- The number of moles of Ba(OH)2 can be calculated using the formula:
- Moles = Molarity × Volume
- Moles of Ba(OH)2 = 0.005 M × 0.3 L = 0.0015 moles
Calculating Moles of Hydroxide Ions
- Since each mole of Ba(OH)2 produces 2 moles of OH⁻, we multiply the moles of Ba(OH)2 by 2:
- Moles of OH⁻ = 0.0015 moles of Ba(OH)2 × 2 = 0.003 moles
Conclusion
Thus, the total number of moles of hydroxide ions in the 0.3 L of 0.005 M solution of Ba(OH)2 is 0.003 moles, confirming that the correct answer is option 'B'.
To calculate the number of moles of hydroxide ions in a solution of barium hydroxide (Ba(OH)2), we need to consider both the concentration of the solution and the dissociation of Ba(OH)2 in water.
Dissociation of Barium Hydroxide
- Barium hydroxide, Ba(OH)2, dissociates in water as follows:
- Ba(OH)2 → Ba²⁺ + 2OH⁻
- This means that for every one mole of Ba(OH)2 that dissolves, it produces two moles of hydroxide ions (OH⁻).
Calculating Moles of Ba(OH)2
- We are given:
- Volume of the solution = 0.3 L
- Molarity (M) = 0.005 M
- The number of moles of Ba(OH)2 can be calculated using the formula:
- Moles = Molarity × Volume
- Moles of Ba(OH)2 = 0.005 M × 0.3 L = 0.0015 moles
Calculating Moles of Hydroxide Ions
- Since each mole of Ba(OH)2 produces 2 moles of OH⁻, we multiply the moles of Ba(OH)2 by 2:
- Moles of OH⁻ = 0.0015 moles of Ba(OH)2 × 2 = 0.003 moles
Conclusion
Thus, the total number of moles of hydroxide ions in the 0.3 L of 0.005 M solution of Ba(OH)2 is 0.003 moles, confirming that the correct answer is option 'B'.
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Number of moles of hydroxide ions in 0.3L of 0.005M solution of Ba (OH)2 is:a)0.0015b)0.003c)0.0050d)0.0075Correct answer is option 'B'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Number of moles of hydroxide ions in 0.3L of 0.005M solution of Ba (OH)2 is:a)0.0015b)0.003c)0.0050d)0.0075Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Number of moles of hydroxide ions in 0.3L of 0.005M solution of Ba (OH)2 is:a)0.0015b)0.003c)0.0050d)0.0075Correct answer is option 'B'. Can you explain this answer?.
Number of moles of hydroxide ions in 0.3L of 0.005M solution of Ba (OH)2 is:a)0.0015b)0.003c)0.0050d)0.0075Correct answer is option 'B'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Number of moles of hydroxide ions in 0.3L of 0.005M solution of Ba (OH)2 is:a)0.0015b)0.003c)0.0050d)0.0075Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Number of moles of hydroxide ions in 0.3L of 0.005M solution of Ba (OH)2 is:a)0.0015b)0.003c)0.0050d)0.0075Correct answer is option 'B'. Can you explain this answer?.
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