Chemistry bonds


answer: A
can someone explain why not E

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hi

boiling point elevation = Kbmi with i=number of dissolved particles
A) = Kb * 0,2 * 3 = 0,6Kb this is highest so A) is the correct option
B) = Kb * 0,2 * 2 = 0,4Kb
C) = Kb * 0,1 * 4 = 0,4Kb
D) = Kb * 0,2 * 2 = 0,4Kb
E) = Kb * 0,2 * 2 = 0,4Kb with Na covalently bonded to C so it will not give off an ion when placed in solution

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How do you know that the value for i in options D and E are 2? what are they dissolved into?

CH3OH = CH3O⁻ + H⁺ so i=2
NaC2H3O2 = NaC2H3O⁻ + H⁺ so i=2

hey juliette, how do you get the number of particles, for example, option A, its calcuim and chlorine, does’nt that make it two, you multiplied 0.2 by 3, why?

hi it’s calcium dichloride, so CaCl2 = Ca²⁺ + 2Cl⁻ so in total we have Ca²⁺ + Cl⁻ + Cl⁻ = 3

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aah, i see, thank you so much !

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