Chemistry, 23.10.2021 04:00, lilobekker5219
How would you prepare 0.5 ml of a 0.5mol / L benzoate buffer at pH 4.5 using a 4.0mol / L benzoic acid solution and a 2.0mol, d * m ^ - 3 sodium benzoate solution? The pKa value of benzoic acid is 4.19.
Answers: 1
Chemistry, 22.06.2019 06:00, VamPL
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+3coโ2fe+3co2 enter the elemental symbol. view available hint(s) is oxidized part b which element is reduced in this reaction? 2hcl+2kmno4+3h2c2o4โ6co2+2mno2+2kcl +4h2o enter the elemental symbol. view available hint(s) is reduced
Answers: 1
Chemistry, 22.06.2019 13:10, bartonamber4042
Select the correct answer a modure consists of glucose and water. what is the percent composition of glucose in the mixture if it contains 1.3 moles of glucose (cho total mass of the mature is 276 grams? ) and the a 1775
Answers: 1
How would you prepare 0.5 ml of a 0.5mol / L benzoate buffer at pH 4.5 using a 4.0mol / L benzoic ac...
Biology, 06.10.2019 01:00
English, 06.10.2019 01:00