One gram equivalent of a substance is present in
Asked by admin @ in Chemistry viewed by 290 People
One g equivalent of a substance is present in-
1) 0.25 mole of O2
2)0.5 mole of O2
3)1.00 mole of O2
4)8.00 mole of O2
Asked by admin @ in Chemistry viewed by 290 People
One g equivalent of a substance is present in-
1) 0.25 mole of O2
2)0.5 mole of O2
3)1.00 mole of O2
4)8.00 mole of O2
Answered by admin @
Answer: The correct answer is Option 1.
Explanation:
To calculate the equivalent weight of a substance, we use the equation:
Molecular mass of oxygen molecule = 32
Valency of oxygen molecule = 4
Putting values in above equation, we get:
To calculate the number of moles, we use the equation:
....(1)
And, to calculate the number of gram equivalents, we use the equation:
.....(2)
For the given options:
Moles of = 0.25 mol
Molar mass of = 32 g/mol
Putting values in equation 1, we get:
Now, using equation 2, we get:
Equivalent weight of = 8 g/eq
Given mass of = 8 g
Putting values in equation 2, we get:
Moles of = 0.5 mol
Molar mass of = 32 g/mol
Putting values in equation 1, we get:
Now, using equation 2, we get:
Equivalent weight of = 8 g/eq
Given mass of = 16 g
Putting values in equation 2, we get:
Moles of = 1.00 mol
Molar mass of = 32 g/mol
Putting values in equation 1, we get:
Now, using equation 2, we get:
Equivalent weight of = 8 g/eq
Given mass of = 32 g
Putting values in equation 2, we get:
Moles of = 8.00 mol
Molar mass of = 32 g/mol
Putting values in equation 1, we get:
Now, using equation 2, we get:
Equivalent weight of = 8 g/eq
Given mass of = 256 g
Putting values in equation 2, we get:
Hence, the correct answer is Option 1.
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