(a)
Interpretation: To determine the moles of oxygen required to produce 10.8 g of water.
Concept Introduction: Mole can be defined as the ratio of mass and molar mass of a particular compound.
(a)
Answer to Problem 108A
The mole of oxygen will be 0.33 mole.
Explanation of Solution
According to the balanced equation,
1 mole of hydrogen combines with
So, 4.5 moles of hydrogen will combine with 2.25 moles of oxygen and form 4.5 moles of water.
It is given that,
The mass of oxygen = 10.8 g
The molar mass of oxygen = 32.g
The mole of oxygen can be determined by using the formula:
The moles of oxygen will be 0.33 moles.
(b)
Interpretation: To determine the volume of oxygen.
Concept Introduction: Mole can be defined as the ratio of mass and molar mass of a particular compound. The unit of the mole is the mole.
(b)
Answer to Problem 108A
The volume of the oxygen will be 7.37 L
Explanation of Solution
The given data:
A mole of oxygen = 0. 3375 moles
At STP,
Temperature (T) = 273 K
Pressure (P) = 1 atm
According to the ideal gas equation,
Where P is pressure, V is volume and T is temperature.
Put the given data in the above equation.
Therefore, the volume of the oxygen will be 7.37L.
Chapter 15 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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