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When BaBr2 is heated in a stream of chlorine, it is completely converted to BaCl2. From 1.50g of BaBr2, just 1.05g of BaCl2 is obtained. Calculate the atomic weight of Ba from this data
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Calculation of the atomic weight of Ba
Given:
- Mass of BaBr2 = 1.50g
- Mass of BaCl2 obtained = 1.05g
To calculate the atomic weight of Ba, we need to use the concept of stoichiometry. Stoichiometry is the study of the quantitative relationships between reactants and products in a chemical reaction.
Step 1: Write the balanced chemical equation
The given reaction can be represented as:
BaBr2 + Cl2 → BaCl2 + Br2
Step 2: Calculate the molar mass of BaBr2 and BaCl2
- Molar mass of BaBr2 = molar mass of Ba + 2 * molar mass of Br = 137.33 g/mol + 2 * 79.90 g/mol = 297.13 g/mol
- Molar mass of BaCl2 = molar mass of Ba + 2 * molar mass of Cl = 137.33 g/mol + 2 * 35.45 g/mol = 208.23 g/mol
Step 3: Calculate the number of moles of BaBr2
Number of moles = Mass / Molar mass
Number of moles of BaBr2 = 1.50g / 297.13 g/mol = 0.00505 mol
Step 4: Determine the stoichiometry
From the balanced equation, we can see that 1 mole of BaBr2 reacts to form 1 mole of BaCl2. Therefore, the number of moles of BaCl2 formed will also be 0.00505 mol.
Step 5: Calculate the molar mass of Ba
Molar mass of Ba = Mass / Number of moles
Molar mass of Ba = 1.05g / 0.00505 mol = 207.92 g/mol
Conclusion:
The atomic weight of Ba, also known as the molar mass, is calculated to be 207.92 g/mol based on the given data. This value represents the average mass of one mole of Ba atoms. The calculation involved determining the number of moles of BaBr2 and BaCl2 using their respective molar masses and then using the stoichiometry of the balanced equation to relate the two. The obtained molar mass of Ba is consistent with the accepted atomic weight of 137.33 g/mol.
Given:
- Mass of BaBr2 = 1.50g
- Mass of BaCl2 obtained = 1.05g
To calculate the atomic weight of Ba, we need to use the concept of stoichiometry. Stoichiometry is the study of the quantitative relationships between reactants and products in a chemical reaction.
Step 1: Write the balanced chemical equation
The given reaction can be represented as:
BaBr2 + Cl2 → BaCl2 + Br2
Step 2: Calculate the molar mass of BaBr2 and BaCl2
- Molar mass of BaBr2 = molar mass of Ba + 2 * molar mass of Br = 137.33 g/mol + 2 * 79.90 g/mol = 297.13 g/mol
- Molar mass of BaCl2 = molar mass of Ba + 2 * molar mass of Cl = 137.33 g/mol + 2 * 35.45 g/mol = 208.23 g/mol
Step 3: Calculate the number of moles of BaBr2
Number of moles = Mass / Molar mass
Number of moles of BaBr2 = 1.50g / 297.13 g/mol = 0.00505 mol
Step 4: Determine the stoichiometry
From the balanced equation, we can see that 1 mole of BaBr2 reacts to form 1 mole of BaCl2. Therefore, the number of moles of BaCl2 formed will also be 0.00505 mol.
Step 5: Calculate the molar mass of Ba
Molar mass of Ba = Mass / Number of moles
Molar mass of Ba = 1.05g / 0.00505 mol = 207.92 g/mol
Conclusion:
The atomic weight of Ba, also known as the molar mass, is calculated to be 207.92 g/mol based on the given data. This value represents the average mass of one mole of Ba atoms. The calculation involved determining the number of moles of BaBr2 and BaCl2 using their respective molar masses and then using the stoichiometry of the balanced equation to relate the two. The obtained molar mass of Ba is consistent with the accepted atomic weight of 137.33 g/mol.
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?When BaBr2 is heated in a stream of chlorine, it is completely converted to BaCl2. From 1.50g of BaBr2, just 1.05g of BaCl2 is obtained. Calculate the atomic weight of Ba from this data
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?When BaBr2 is heated in a stream of chlorine, it is completely converted to BaCl2. From 1.50g of BaBr2, just 1.05g of BaCl2 is obtained. Calculate the atomic weight of Ba from this data for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about ?When BaBr2 is heated in a stream of chlorine, it is completely converted to BaCl2. From 1.50g of BaBr2, just 1.05g of BaCl2 is obtained. Calculate the atomic weight of Ba from this data covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for ?When BaBr2 is heated in a stream of chlorine, it is completely converted to BaCl2. From 1.50g of BaBr2, just 1.05g of BaCl2 is obtained. Calculate the atomic weight of Ba from this data.
?When BaBr2 is heated in a stream of chlorine, it is completely converted to BaCl2. From 1.50g of BaBr2, just 1.05g of BaCl2 is obtained. Calculate the atomic weight of Ba from this data for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about ?When BaBr2 is heated in a stream of chlorine, it is completely converted to BaCl2. From 1.50g of BaBr2, just 1.05g of BaCl2 is obtained. Calculate the atomic weight of Ba from this data covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for ?When BaBr2 is heated in a stream of chlorine, it is completely converted to BaCl2. From 1.50g of BaBr2, just 1.05g of BaCl2 is obtained. Calculate the atomic weight of Ba from this data.
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