Consider the following intermediate chemical equations 2h2(g 200 h2(g)+f2(g) → 2hf(g) in the final chemical equation, hf and o2 are the products that are formed through the reaction between h2o and f. before you can add these intermediate chemical equations, you need to alter them by multiplying the second equation by 2 and reversing the first equation. first equation by 2 and reversing it. first equation by (1/2) and reversing the second equation. second equation by 2 and reversing it.

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.