I'm doing the A2 Chemistry B Salters coursework, magnesium and acids, and I'm currently doing the analysis for my data
I've found my rate equation and total order, but I'm stuck on how to find a value for "k" when my rate does not have the right units, does anyone know how to convert from cm3s-1 to moldm-3s-1 without the need to draw a graph?
I'm doing the A2 Chemistry B Salters coursework, magnesium and acids, and I'm currently doing the analysis for my data
I've found my rate equation and total order, but I'm stuck on how to find a value for "k" when my rate does not have the right units, does anyone know how to convert from cm3s-1 to moldm-3s-1 without the need to draw a graph?
Any help is appreciated! Thanks
Presumably cm3 of gas.
Volume of gas ===> moles of gas (volume/24 @room temp)
Moles of gas ====> moles of reagent reacted (use the equation stoichiometry)
Moles of reagent reacted ===> new solution concentration (molarity = moles/vol)
You want to know how the concentration of the acid decreases with time.
You find the moles of gas ===> get the moles of acid reacted ===> calculate change in acid concentration.
Sorry, quick silly question, your help has been brilliant and I'm finally getting there - but when calculating the change in acid concentration, is it the moles of the acid/volume of the acid or /volume of the has produced?
Sorry, quick silly question, your help has been brilliant and I'm finally getting there - but when calculating the change in acid concentration, is it the moles of the acid/volume of the acid or /volume of the has produced?
Concentration is always moles of solute / volume of solution