An aqueous solution contains 0.400 m nitrous acid. how many ml of 0.223 m sodium hydroxide would have to be added to 225 ml of this solution in order to prepare a buffer with a ph of 3.380?

If you want to create an electrical current, which situation would produce a solution capable of this

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.

Consider this initial-rate data at a certain temperature for the reaction described by