A rectangular brass plate that measures 10.0 cm × 5.0 cm is plated on ONE side with…
CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry
Problem
A rectangular brass plate that measures 10.0 cm × 5.0 cm is plated on ONE side with nickel using a constant current of 2.50 A for 45.0 min. The nickel ions present are Ni²⁺. Relevant data: atomic mass of Ni = 58.7 g mol⁻¹; density of Ni = 8.90 g cm⁻³; Faraday constant = 9.65 × 10⁴ C mol⁻¹.
What is the average thickness of the nickel layer, expressed in micrometres (µm)?
(a) 23μm
(b) 9.2μm
(c) 46μm
(d) 92μm