Electrolysis can be thought of as a redox reaction. Discuss the statement by explaining the changes that take place at the anode and cathode during electrolysis, using an example of a molten ionic compound (potassium chloride) .

Write half equations for the reactions occurring at each electrode.

Hints:

1. Identify metallic and non-metallic substances.
2. What are the charges of a metallic and non metallic ions.
3. Identify which electrode the ions go to.
4. Discuss whether electrons are lost or gained at this electrode.

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j