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? 4:46 PM a session.masteringchemistry.com .. 1 T-Mobile Side Door to Mastering Make selections below to get to Mastering course pages when your regular access is More into about using this pagel Launch EText Select the course you want to acccess Select the page you want to access Chapter 16 Homework Acids and Bases ltem 46 Identifly the Lewis acid and Lewis base from among the reactants in each of the following equations. Part A Fe3+ (aq) + 6H20(i-Fe(H2O)63. (aq) O H2O is the Lewis acid and Fe+ is the Lewis base. O Fe is the Lewis acid and H20 is the Lewis base. ? Part B O NHs is the Lewis acid and Zn+ is the Lewis base Za2 is the Lewis acid and NHs is the Lewis base. Reg mat Answer -Part C O BFs is the Lewis acid and (C2Hs)20 is the Lewis base O (C2Hs)20 is the Lewis acid and BFs is the Lewis base

Explanation / Answer

Part A

Fe3+ is the Lewis acid and H2O is a Lewis Base.

Part B

Zn2+ is the Lewis acid and NH3 is a Lewis Base.

Part C

BF3 is the Lewis acid and C2H5)2O is a Lewis Base.

Explanation: Lewis acids are the species which can accept the electrons or electron deficient while Lewis bases are the species which can donate electrons or electron rich.

Part A

Lewis acid Lewis base

BeCl2 CN-

B(CH3)3 OH-

Explanation: BeCl2 and B(CH3)3 are the Lewis acid because these are electron deficient species while CN- and OH- is Lewis base due to its electron-rich nature.

Part A

According to Henderson–Hasselbalch equation,

pH = pKa + Log10 ([A-] )

pH = 9.245 + Log10 ( 0.12)

pH = 8.324.

Part B

According to Henderson–Hasselbalch equation,

pH = pKa + Log10 ([A-] )

pH = 4.74 + Log10 ( 0.20)

pH = 4.041..

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