複選題43. Consider a buffered solution containing CH3NH:Cl and CH3NH2. Which of the followingstatements concerning this solution are TRUE? (A) A solution consisting of 0.10 M CH3NH3CI and 0.10 M CH3NH2 would have a higherbuffering capacity than one containing 1.0 M CH3NH3CI and 1.0 M CH3NH2.(B) If [CH3NH2] ＞ [CH3NH3⁺], then the pH is larger than the pKa value of CH3NH3⁺ .(C) Adding more [CH3NH3Cl] to the initial buffer solution will increase the pH.(D) If [CH3NH2] ＞ [CH3NH3⁺], then pH ＞ 10.50.(E) IF [CH3NH2] = [CH3NH3⁺], then pH = 3.30.

複選題40. Which of the following statements about "The Bohr Model" and "Particle in a Box" areTRUE?(A) A function of the type A cos(Lx) can be an appropriate solution for the particle in a one-dimensional box.(B) If the wavelength of light necessary to promote an electron from the ground state to thefirst excited state is λ in a one-dimensional box, then the wavelength of light necessary topromote an electron from the first excited state to the third excited state will be λ/2.(C) The total probability of finding a particle in a one-dimensional box (length is L) in energylevel n = 4 between x = L/4 and x = L/2 is 25%.(D) For an electron trapped in a one-dimensional box, as the length of the box increases, thespacing between energy levels will increase.(E) Assume that a hydrogen atom's electron has been excited to the n = 5 level. When thisexcited atom loses energy, 10 different wavelengths of light can be emitted.

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