For a diprotic acid H_2A, the relationship K_a1 > K_a2 is always true. The solub

Question

For a diprotic acid H_2A, the relationship K_a1 > K_a2 is always true. The solubility of salt MX (solubility product constant K_sp) in water will always be greater than that of salt MX (solubility product constant K_sp) provided that K_sp > K_sp. Arrhenius bases raise the hydroxide ion concentration when dissolved in water. The pH of a 0.200M solution of the weak base pyridine, C_5H_5N, is 8.59. Calculate K Show your work What is the pH of a 0.050 M triethylamine, (C_2H_5)_3 N, solution? K_b for triethylamine is 5.3 times 10^-4? A formic acid buffer containing 0.50 M HCOOH and 0.50 M HCOONa has a pl of 3.77. What will the pH be after 0.010 mol of NaOH has been added to 100.0 mL of the buffer?

Explanation / Answer

Question 4.

True, for diprotic acids Ka1 > Ka2, since the first proton is easier to donate due to the electronegativ echarges

Qeustion 5.

MX solubility

MX <-> M+ + X-

S = Sqrt(KSp)

MX3 --> M+3 + 3X-

Ksp = (S)(3S)^3

27*S^4 = Ksp

S = (Ksp/27)^(1/4)

This is true

the solubiltiy opf MX if Ksp > Ksp of MX3

Question 6.

ahrrenius bases --> must donate OH- to solution

therefore, this is true

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