Chemistry
2018 · Paper 1
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Complete GATE CY 2018 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 31–33 of 65. Imported answers require review unless explicitly marked reviewed.
Question 21
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Two moles of an ideal gas X and two moles of an ideal gas Y, initially at the same temperature and pressure, are mixed under isothermal-isobaric condition. The entropy change on mixing is __________ J K⁻¹. (Up to one decimal place. Use R = 8.31 J K⁻¹ mol⁻¹)
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The energy of a hydrogen molecule in its ground state equilibrium configuration is −31.7 eV. Its dissociation energy is _________ eV. (Up to one decimal place)
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The total number of valence electrons in W(η³-Cp)(η⁵-Cp)(CO)₂ is _____. (Atomic number of W = 74)
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