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Which of the fo llowing is/are correct?
(I) If liquid “kryptonite” (from Superman’s home planet), with a density twice that of mercury, is used in a barometer on earth, one standard atmosphere of pressure would support a column of mercury 380 mm in height.
(II) At constant volume and number of moles of gas, the pressure exhibited by an ideal gas is directly proportional to its absolute temperature.
(III) At standard temperature and pressure (STP), the volume of a mixture of gases containing 0.400 mol H2, 0.600 mo l N2, and 1.00 mol of O2 is 44.8 L and the mole fraction of N2 is 0.300.
(II) At constant volume and number of moles of gas, the pressure exhibited by an ideal gas is directly proportional to its absolute temperature.
(III) At standard temperature and pressure (STP), the volume of a mixture of gases containing 0.400 mol H2, 0.600 mo l N2, and 1.00 mol of O2 is 44.8 L and the mole fraction of N2 is 0.300.
- a)II only
- b)III only
- c)II and III only
- d)I , II, III
Correct answer is option 'C'. Can you explain this answer?
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Which of the fo llowing is/are correct?(I) If liquid “kryptonite...
Statement I: If liquid kryptonite (from Superman's home planet), with a density twice that of mercury, is used in a barometer on earth, one standard atmosphere of pressure would support a column of mercury 380 mm in height.
This statement is incorrect. The height of a column of liquid in a barometer is determined by the pressure exerted by the atmosphere. The height of the column is inversely proportional to the density of the liquid. Since liquid kryptonite has a density twice that of mercury, the height of the column would be half that of a column of mercury, not 380 mm.
Statement II: At constant volume and number of moles of gas, the pressure exhibited by an ideal gas is directly proportional to its absolute temperature.
This statement is correct. This relationship is known as Charles' Law, which states that the volume of a given amount of gas held at constant pressure is directly proportional to the absolute temperature. Mathematically, this can be expressed as P ∝ T, where P is the pressure and T is the absolute temperature.
Statement III: At standard temperature and pressure (STP), the volume of a mixture of gases containing 0.400 mol H2, 0.600 mol N2, and 1.00 mol of O2 is 44.8 L and the mole fraction of N2 is 0.300.
This statement is incorrect. At standard temperature and pressure (STP), 1 mole of any gas occupies a volume of 22.4 liters. In this case, the total number of moles of gases (0.400 mol H2 + 0.600 mol N2 + 1.00 mol O2) is 2.00 moles. Therefore, the total volume of the mixture should be 2.00 moles x 22.4 L/mole = 44.8 L. However, the statement mentions that the volume is 44.8 L, which is incorrect.
In summary:
- Statement I is incorrect.
- Statement II is correct.
- Statement III is incorrect.
Therefore, the correct answer is Option C: II and III only.
This statement is incorrect. The height of a column of liquid in a barometer is determined by the pressure exerted by the atmosphere. The height of the column is inversely proportional to the density of the liquid. Since liquid kryptonite has a density twice that of mercury, the height of the column would be half that of a column of mercury, not 380 mm.
Statement II: At constant volume and number of moles of gas, the pressure exhibited by an ideal gas is directly proportional to its absolute temperature.
This statement is correct. This relationship is known as Charles' Law, which states that the volume of a given amount of gas held at constant pressure is directly proportional to the absolute temperature. Mathematically, this can be expressed as P ∝ T, where P is the pressure and T is the absolute temperature.
Statement III: At standard temperature and pressure (STP), the volume of a mixture of gases containing 0.400 mol H2, 0.600 mol N2, and 1.00 mol of O2 is 44.8 L and the mole fraction of N2 is 0.300.
This statement is incorrect. At standard temperature and pressure (STP), 1 mole of any gas occupies a volume of 22.4 liters. In this case, the total number of moles of gases (0.400 mol H2 + 0.600 mol N2 + 1.00 mol O2) is 2.00 moles. Therefore, the total volume of the mixture should be 2.00 moles x 22.4 L/mole = 44.8 L. However, the statement mentions that the volume is 44.8 L, which is incorrect.
In summary:
- Statement I is incorrect.
- Statement II is correct.
- Statement III is incorrect.
Therefore, the correct answer is Option C: II and III only.
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Which of the fo llowing is/are correct?(I) If liquid “kryptonite...
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Which of the fo llowing is/are correct?(I) If liquid “kryptonite” (from Superman’s home planet), with a density twice that of mercury, is used in a barometer on earth, one standard atmosphere of pressure would support a column of mercury 380 mm in height.(II) At constant volume and number of moles of gas, the pressure exhibited by an ideal gas is directly proportional to its absolute temperature.(III) At standard temperature and pressure (STP), the volume of a mixture of gases containing 0.400 mol H2, 0.600 mo l N2, and 1.00 mol of O2 is 44.8 L and the mole fraction of N2 is 0.300.a)II onlyb)III onlyc)II and III onlyd)I , II, IIICorrect answer is option 'C'. Can you explain this answer?
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Which of the fo llowing is/are correct?(I) If liquid “kryptonite” (from Superman’s home planet), with a density twice that of mercury, is used in a barometer on earth, one standard atmosphere of pressure would support a column of mercury 380 mm in height.(II) At constant volume and number of moles of gas, the pressure exhibited by an ideal gas is directly proportional to its absolute temperature.(III) At standard temperature and pressure (STP), the volume of a mixture of gases containing 0.400 mol H2, 0.600 mo l N2, and 1.00 mol of O2 is 44.8 L and the mole fraction of N2 is 0.300.a)II onlyb)III onlyc)II and III onlyd)I , II, IIICorrect answer is option 'C'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Which of the fo llowing is/are correct?(I) If liquid “kryptonite” (from Superman’s home planet), with a density twice that of mercury, is used in a barometer on earth, one standard atmosphere of pressure would support a column of mercury 380 mm in height.(II) At constant volume and number of moles of gas, the pressure exhibited by an ideal gas is directly proportional to its absolute temperature.(III) At standard temperature and pressure (STP), the volume of a mixture of gases containing 0.400 mol H2, 0.600 mo l N2, and 1.00 mol of O2 is 44.8 L and the mole fraction of N2 is 0.300.a)II onlyb)III onlyc)II and III onlyd)I , II, IIICorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the fo llowing is/are correct?(I) If liquid “kryptonite” (from Superman’s home planet), with a density twice that of mercury, is used in a barometer on earth, one standard atmosphere of pressure would support a column of mercury 380 mm in height.(II) At constant volume and number of moles of gas, the pressure exhibited by an ideal gas is directly proportional to its absolute temperature.(III) At standard temperature and pressure (STP), the volume of a mixture of gases containing 0.400 mol H2, 0.600 mo l N2, and 1.00 mol of O2 is 44.8 L and the mole fraction of N2 is 0.300.a)II onlyb)III onlyc)II and III onlyd)I , II, IIICorrect answer is option 'C'. Can you explain this answer?.
Which of the fo llowing is/are correct?(I) If liquid “kryptonite” (from Superman’s home planet), with a density twice that of mercury, is used in a barometer on earth, one standard atmosphere of pressure would support a column of mercury 380 mm in height.(II) At constant volume and number of moles of gas, the pressure exhibited by an ideal gas is directly proportional to its absolute temperature.(III) At standard temperature and pressure (STP), the volume of a mixture of gases containing 0.400 mol H2, 0.600 mo l N2, and 1.00 mol of O2 is 44.8 L and the mole fraction of N2 is 0.300.a)II onlyb)III onlyc)II and III onlyd)I , II, IIICorrect answer is option 'C'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Which of the fo llowing is/are correct?(I) If liquid “kryptonite” (from Superman’s home planet), with a density twice that of mercury, is used in a barometer on earth, one standard atmosphere of pressure would support a column of mercury 380 mm in height.(II) At constant volume and number of moles of gas, the pressure exhibited by an ideal gas is directly proportional to its absolute temperature.(III) At standard temperature and pressure (STP), the volume of a mixture of gases containing 0.400 mol H2, 0.600 mo l N2, and 1.00 mol of O2 is 44.8 L and the mole fraction of N2 is 0.300.a)II onlyb)III onlyc)II and III onlyd)I , II, IIICorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the fo llowing is/are correct?(I) If liquid “kryptonite” (from Superman’s home planet), with a density twice that of mercury, is used in a barometer on earth, one standard atmosphere of pressure would support a column of mercury 380 mm in height.(II) At constant volume and number of moles of gas, the pressure exhibited by an ideal gas is directly proportional to its absolute temperature.(III) At standard temperature and pressure (STP), the volume of a mixture of gases containing 0.400 mol H2, 0.600 mo l N2, and 1.00 mol of O2 is 44.8 L and the mole fraction of N2 is 0.300.a)II onlyb)III onlyc)II and III onlyd)I , II, IIICorrect answer is option 'C'. Can you explain this answer?.
Solutions for Which of the fo llowing is/are correct?(I) If liquid “kryptonite” (from Superman’s home planet), with a density twice that of mercury, is used in a barometer on earth, one standard atmosphere of pressure would support a column of mercury 380 mm in height.(II) At constant volume and number of moles of gas, the pressure exhibited by an ideal gas is directly proportional to its absolute temperature.(III) At standard temperature and pressure (STP), the volume of a mixture of gases containing 0.400 mol H2, 0.600 mo l N2, and 1.00 mol of O2 is 44.8 L and the mole fraction of N2 is 0.300.a)II onlyb)III onlyc)II and III onlyd)I , II, IIICorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry.
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ample number of questions to practice Which of the fo llowing is/are correct?(I) If liquid “kryptonite” (from Superman’s home planet), with a density twice that of mercury, is used in a barometer on earth, one standard atmosphere of pressure would support a column of mercury 380 mm in height.(II) At constant volume and number of moles of gas, the pressure exhibited by an ideal gas is directly proportional to its absolute temperature.(III) At standard temperature and pressure (STP), the volume of a mixture of gases containing 0.400 mol H2, 0.600 mo l N2, and 1.00 mol of O2 is 44.8 L and the mole fraction of N2 is 0.300.a)II onlyb)III onlyc)II and III onlyd)I , II, IIICorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Chemistry tests.
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