Definition Flashcards
(15 cards)
What are TM?
d block element which can form 1 or more stable ions with its partially filled d subshell
Standard Electrode Potential E°
- SEP is the electromotive force, measured at 298K, b/w half-cell and standard hydrogen electrode (SHE).
- conc. of any reacting species is 1mol/dm3 and gaseous speices at 1bar
Standard Cell Potential
potential difference b/w 2 half cell under standard conditions
Dynamic Equilibrium
it is a state in a reversible system, where rate of forward rxn and rate of backwards reactions are continuing at the same rate, resulting in no net change in macroscopic properties of reactants and products.
Rate of Reaction
change in conc. of a particular reactant/product per unit time
find instantateous rate by using gradient
rate constant (k)
Rate constant is the proportionality constant in the rate equation of the reaction.
k increases with temperature or with catalyst
Half-life
time taken for the conc of a reactant to decrease to half its initial value
t(1/2) = ln2/k
What are Buffer Solutions?
solution that can resist pH changes when small amounts of acid or base is added
Bronsted-Lowry Base
Proton Acceptor
Bronsted-Lowry Base
Proton Acceptor
Lewis Acid
electron pair acceptor
Lewis Base
electron pair donor
Electronegativity
Relative ability for atom in molecule to attract bonding electrons
What are zwitterions?
Zwitterions are electrically neutral molecules with oppositely charged ends
ionic bonds formed between the oppositely charged ends
Stereoisomerism
Stereoisomerism refers to the existence of two or more compounds with the same molecular formula and structural formula but different spatial arrangement of atoms.
