4 (a) Calculate the value of Kc for the reaction: PC15 (g) PC13 Cl2 (g) + (g) AH = Positive Given that when 8.4 mol of PC15 (g) is mixed with 1.8 mol of PC13 (g) and allowed to come to equilibrium in a 10 dm³ container the amount of PC15 (g) at equilibrium is 7.2 mol. Kc = (b) Explain the effect of the following changes below on the value of Kc: (i) Increasing temperature (ii) Lowering the concentration of chlorine (C12) (iii) Addition of a catalyst

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Q: 17. The conjugate base for HSO4⁻ is: Select one: a. OH⁻ b. HSO4⁻ c. SO42- d. H2SO4

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Q: Name the compounds: CH 3 H₂C - CH₂ 1 CH₂ CH₂ CH3 Y CH₂-CH-CH-CH₂CH Br 3.5-3 CH CH₂ 5-5

A: given name of the compounds According to IUPAC nomenclature