GATE CY 2023 Paper 1 — page 20

Questions 58–60 of 65. Imported answers require review unless explicitly marked reviewed.

The enthalpy change for the exothermic reaction between BeI₂ and HgF₂ is ______ kJ mol⁻¹ (rounded off to the nearest integer)

(Given: Bond dissociation energy (in kJ mol⁻¹) for Be–F = 632, Be–I = 289, Hg–F = 268 and Hg–I = 145)

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Number of carbon atoms connected to the metal center in [W(C₆₀)(CO)₅] is ______ (rounded off to the nearest integer)

(Given: atomic number of W is 74)

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Two-component solid-liquid system of naphthalene-benzene forms a simple eutectic mixture. Assuming that naphthalene-benzene forms an ideal solution, the mole fraction of naphthalene in benzene at 300 K and 1 bar is ______ (rounded off to two decimal places)

(Given: Freezing point (T₍fp₎) and enthalpy of fusion (ΔH₍fus₎) of naphthalene are 353 K and 19.28 kJ mol⁻¹, respectively and gas constant (R) = 8.31 J K⁻¹ mol⁻¹)

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2023 · Paper 1

Question 58

Question 59

Question 60