Gold should used in pin manufacturing instead of copper. Explain. Concept Introduction: Electroplating: It is a process which uses electric current to decrease dissolved metal cations so that they produce a thin metal (coherent) coating on an electrode. Electroplating changes the mechanical, chemical and physical properties of the workpiece. Electroplating of gold on nickel-plated circuits reduces the contact resistance as well as the surface hardness.

Question

Consider the following SN 2 reaction: مار + Br H₂O acetone + Br OH What effect would each of the following changes have on the rate of this reaction. Select the single best answer for each part. Part 1 of 3 If the substrate was changed to: The rate would Br O increase O decrease O remain unchanged Part 2 of 3 × S If the nucleophile was changed to OH, the rate would: O increase O decrease O remain unchanged Part 3 of 3 If the solvent was changed to ethanol, the rate would: Increase O decrease O remain unchanged 2 ol Ar

Answer 1

Question

Chapter 13, Problem 13.33PAE

Interpretation Introduction

Interpretation:

Gold should used in pin manufacturing instead of copper. Explain.

Concept Introduction:

Electroplating: It is a process which uses electric current to decrease dissolved metal cations so that they produce a thin metal (coherent) coating on an electrode.

Electroplating changes the mechanical, chemical and physical properties of the workpiece.

Electroplating of gold on nickel-plated circuits reduces the contact resistance as well as the surface hardness.

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