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rhschem
เข้าร่วมเมื่อ 4 มี.ค. 2012
AP 7 6 Molarity and Stoich
AP chemistry solutions, Molarity, Stoichiometry, net ionic equations
มุมมอง: 8
วีดีโอ
Pictures and Video with a Chromebook
มุมมอง 7813 หลายเดือนก่อน
How to take a picture on a Chromebook. How to record a Video on a chromebook. Making a screencast with a Chrombook. Taking a picture in Google slides. I have a touch screen Chromebook, but you can use a mouse to select on your screen.
Chem 2.2 Chem and Phys Change
มุมมอง 123 ปีที่แล้ว
Chemical and Physical Properties Chemical and Physical Changes
Chem 2.1 Classify Matter
มุมมอง 163 ปีที่แล้ว
Heterogeneous mixtures, Homogeneous mixtures (solutions), compounds, elements
AP 12.5 E, K, dG
มุมมอง 143 ปีที่แล้ว
Voltage relationships with Free Energy and the equilibrium constant, K.
AP 12 4 Voltaic Cell More Practice
มุมมอง 133 ปีที่แล้ว
Anode, Cathode, Electrical Potential, Redox equations, favorable or not favorable, positive or not positive volatage.
AP 11 3 Weak acid Ka and pH
มุมมอง 203 ปีที่แล้ว
weak acid and weak base equilibria problems calculating pH of a weak acid or weak base
AP 11 1 Acids and Bases
มุมมอง 223 ปีที่แล้ว
Arrhenius theory of acids and bases Bronsted-Lowry theory of acids and bases Strong and Weak acids and bases
AP 10 7b Kinetics and Free Energy
มุมมอง 223 ปีที่แล้ว
Equilibrium constant K and Free energy The larger the K, the more negative the G, the more products that are formed to make a reaction thermodynamically favorable.
Very useful. So if synthesis and decompositions vary in their redox-nonredox definition, is there a reason we study those 2 types separately? Why is it useful to classify reactions in terms of whether electrons were interchanged or not? What fundamental properties of this interchange warrant this classification?
From here the only answer I can come up with is that perhaps redox reactions can produce an electric current? But from what I understand this classification existed among chemists before electricity was domesticated, so probably not the reason... So perhaps the question is what makes the redox-nonredox distinction useful enough that it persisted through the ages and generalised to "transfer of electrons" :D If you have the answer to the sister question of why we study acid-base reactions and why humans are so interested in the concentration of H+ in solutions, I'll be grateful as well :D
At 19:00 minutes, there is a typo. to find I2, you would replace the value of x in (0.20-x). x is so small it doesn't take away much from the concentration. So, the value of I2 is 0.20 M. K is so small that there is not a lot of product, and the amount of reactant essentially is the same.
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