5- inorganic chem

what is the rate equation?

rate= k (A)^m (B)^n

what is the overall order of reaction

m+n

what does order 0 mean

the rate is unaffected by the concentration

what does order 1 mean

the rate is direclty proportional to the concentration, when it doubles so does the rate

what does order 2 mean

rate is proportional to the concentration squared, if you double the concentration the rate will increase by a factor of 2²

what does half life mean

the time take for the concentration of a reactant to decrease by half

what is the equation for finding k when using half life of a first order reaction, concentration time graphs

k= ln 2/ half life

whats the equation that links rate, change in concnetration and change in time

rate = change in conc/ change in time

how to find k with order 0 using graphs 

concentration time graph: gradient = k 

rate concentration graph: y intercept = k 

how to find k with order 1 using graphs 

concentration time graph: k= l2/ h.lL 

rate concentration graph: gradient = k 

initial rate

the instantaneous rate of a chemical reaction at t=0

what are pros and cons of continous monitoring

pros: more accurate

cons: more work to monitor several reactions over some time. Takes longer to process results

what are pros and cons of the clock method

pros: quick and simple to carry out easy to process 1/t

cons: only gives an approximation of the initial rate, need to choose quantities carefully

What is the shape of an order 0 graph showing time concentration

What would a graph look like for order 0 showing concentration and rate of reaction

What would a graph showing order 1 for conenctration and time

Order 1: concentration/ rate of reaction

Order 2: concentration/ time

Order 2 : concentration/ rate of reaction

lattice enthalpy

the energy change that accompanies the formation of one mole of ionic compound from gaseous ions under standard condidtions

standard enthalpy change of formation

the enthakpy change that happens when one mole of an element is formed from its constituent elements under standard conditions

enthalpy change of atomisation

the enthalpy change that takes place when one mole of gaseous atoms forms from the element in its standard states

firs ionisation energy

the energy required to remove one electron from each atom in one mole of gaseous atoms to form one mole of gaseous 1+ ions

electron affinity

the enthalpy change that takes place when one electron is added to each atom in one mole of gaseous atoms to form on mole of gaseous 1- ions