Arrange the following aqua acids [Na(OH_2)_6]^+, [Mn(OH_2)_6]^2+, and [Ni(OH_2)_

Question

Arrange the following aqua acids [Na(OH_2)_6]^+, [Mn(OH_2)_6]^2+, and [Ni(OH_2)_6]^2+ in order of decreasing strength. Explain your answer. Arrange the following oxoacids in order of increasing strength: S(O)_2 (OH)_2, S(O)_2 (OH)(NH)_2, and S(O)_2 (OH)F For hydrofluoric acid (HF) K_a = 3.5 times 10^-4. Calculate the pKa of 0.10M HF(aq). Identify the conjugate acids of the following bases a. HPO_4^-2 b. CH_3 COOH c. Co(CO)_4^- Platinum can make stable complexes with iodine or fluorine. Explain your answer Explain using chemical equations, why BaO is an acid. Discuss the different types of Aprotic solvents. Support your answer with examples. Define the acid based on the solvent system definition of acids & bases

Explanation / Answer

1. The strength of aqua acids typically increase with increasing positive charge of the central atom ion and with decreasing ionic radius.

Mn(OH2)6 2+ = Ni(OH2)6 2+ > Na(OH2)6 +

2.

More electronegative atom bonded to S will result in more H+ dissociation and increase strength as a acid.

S(O)2(OH)F >S(O)2(OH)2 > S (O)2(OH)NH2

5. Large active and passive polarizability of central atom in our case Pt4+ result in stable halide complex formations.

6.

BaO + 2NaOH = Na2BaO2 + H2O (acidic nature as it reacts with base and gives salt and water).

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