Question

Two beakers of clear colorless liquids sit in front of you on a lab bench. One beaker contains 50 mL of aqueous 0.1 M HBr (hydrobromic acid): HBr (aq) + H20 (1) → H30+ + Br (aq) (aq) and the other beaker contains 50 mL of aqueous 0.1 M HNO2 (nitrous acid): HNO2 (aq) + H2O() H3O+ (aq) + NO2- (aq) Answer the following: 1. Do these two solutions dissociate to produce the same amount of [H*]? 2. Do these two solutions dissociate to produce the same amount of [H3O+]? 3. Do these two solutions have the same pH? 4. Do these two solutions have the same level of acidity? Be sure to answer each of the four questions above, support your answers, and specifically explain your reasonin What is the set of four quantum numbers for n=4? .) What is the set of four quantum numbers for Sf?

Answer 1

(1) HBY is a an the hence it strong acid solution, dissociate completely to give HBY BIO 0.1M O.IM But HNO2 An equilibrium is a Heak acid estabilshed does not dissociate completely. case of HNO2 is bin HNO2 (aa) HT * NO2 Lo.im olm so, > [HAJAN H NO2 hence they do not HBY [44] ot Ht give same amount In the Solution As conc. aqueous form Hgot, different so be different. accept lone pair from theo + of for HBY and HNO3 are them produce by will also of tzot amount [Agot] [ Higot] #Nog H BY > (3) -log [HT] MNO2 AS there PH AS [HTJ 81934) Int] i's (PH) HBr < (PH)NO a ve sigh betore tog Ent] ) PH of hBY and MNO2 Solution are different and HBY more acidic Solution is (PH is less). وه وه Solution. will be PH is the acidity the measure out acidity of a Lesser the pH ot a solution greater of the solution. (PH) HBr < so, (Acidity) Mbr> (Acidity) Hoog (PH) HNO2 AS

2 Principle quantum no en) Azimuthal quantum no (1) Magnetic quantum no emi) spin quantum no (ms) l= o to(n-1) mis td to l ms= -/ /*% T O, 1, 2, 3 -3,-2,-1,0, - ½ or +½ 1,2,3 3 For 5f orbital n=5 MS5 d=3 Ćas f-orbital) 9 ms=+% or-% omis -3, -2,-1,o th,2,3