1. you start with 0.020 l of 0.050 m benzoic acid (ka = 6.28*10-5).
a) what is the initial ph?
b) what is the ph if you add 5.0 ml of 0.0010 m koh?
c) how much volume of the 0.0010 m koh would you need to add to get to the equivalence point?
d) what is the ph at the equivalence point?
e) after the addition of 25 ml of 0.050 m koh, what is the ph?
f) how much volume of the 0.050 m koh would you need to add to get to the equivalence point? 9) [what type of indicator would you choose to follow this titration? what change do you expect to see at the equivalence point? ] h) (sketch a curve of volume of 0.050 m koh added to ph and mark the different points of interest. at what volumes of koh added do you have a buffer solution? ]

Oxidation-reduction reactions (often called "redox" for short) are reactions that involve the transfer of electrons from one species to another. oxidation states, or oxidation numbers, allow chemists to keep track of these electron transfers. in general, one element will lose electrons (oxidation), with the result that it will increase in oxidation number, and another element will gain electrons (reduction), thereby decreasing in oxidation number. the species that is oxidized is called the reducing agent or reductant. the species that is reduced is called the oxidizing agent or oxidant. to sum up: oxidation = increase in oxidation state = loss of electrons = reducing agent reduction = decrease in oxidation state = gain of electrons = oxidizing agent part a which element is oxidized in this reaction? fe2o3+3co→2fe+3co2 enter the elemental symbol. view available hint(s) is oxidized part b which element is reduced in this reaction? 2hcl+2kmno4+3h2c2o4→6co2+2mno2+2kcl+4h2o enter the elemental symbol. view available hint(s) is reduced

According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead

Which of these is a physical property