1. The movement of _________
constitutes an electric current
2. During electrolysis, copper is deposited on the___________
3. The passing of___________
through an electrolyte causes chemical effects
4. ________is used for electroplating one metal over the other.
5. Electrons flow from the
terminal________ to the_________
terminal
Answers
Answered by
1
Explanation:
- Electric current, any movement of electric charge carriers, such as subatomic charged particles (e.g., electrons having negative charge, protons having positive charge), ions (atoms that have lost or gained one or more electrons), or holes (electron deficiencies that may be thought of as positive particles).
- Copper is below hydrogen in the reactivity series, hence, copper ion is discharged, and reduced to copper metal. The reaction can be written as: Cu2+(aq) + 2e−→ Cu(s). Hence, the mass of copper deposited at the cathode is 0.529 g.
- Chemical effects of electric current may be defined as the chemical changes produced by the electric current when it is passed through an electrolyte. When an electrolyte such as copper sulphate is dissolved in water, it dissociates into positively and negatively charged ions called cation and anion.
- Electroplating is the process of plating one metal onto another by hydrolysis, most commonly for decorative purposes or to prevent corrosion of a metal. There are also specific types of electroplating such as copper plating, silver plating, and chromium plating.
- If a wire is used to connect the two terminals, electrons from the negative terminal and free electrons in the wire are attracted to the positive terminal and will flow through the wire. Electrons arriving at the positive terminal neutralise some of the positive ions.
Answered by
0
Answer:
1.electric charge.
3.chemical.
4.chromium. D. aluminium.
5.negative and positive
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