Chemistry

Chemistry

Problem

Consider the following reactions : (i) O(g)+e−→O(g)−,ΔH1O_{(g)} + e^- \rightarrow O_{(g)}^-, \Delta H_1 (ii) F(g)+e−→F(g)−,ΔH2F_{(g)} + e^- \rightarrow F_{(g)}^-, \Delta H_2 (iii) Cl(g)+e−→Cl(g)−,ΔH3Cl_{(g)} + e^- \rightarrow Cl_{(g)}^-, \Delta H_3 (iv) O(g)2−+e−→O(g)3−,ΔH4O_{(g)}^{2-} + e^- \rightarrow O_{(g)}^{3-}, \Delta H_4 Then according to given information the correct statement is/are: a. ΔH3\Delta H_3 is more negative than ΔH1\Delta H_1 and ΔH2\Delta H_2 b. ΔH1\Delta H_1 is less negative than ΔH2\Delta H_2 c. ΔH1,ΔH2\Delta H_1, \Delta H_2 and ΔH3\Delta H_3 are negative whereas ΔH4\Delta H_4 is positive. d. ΔH1\Delta H_1 and ΔH3\Delta H_3 are negative whereas ΔH2\Delta H_2 and ΔH4\Delta H_4 are positive.

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