A student sets up a reaction and calc a possible yield of 55.9 grams of silver. If the student performs the reaction and the mass of actual silver obtained is 42.5 grams. What is the percent yield?
A chemical reaction's percent yield basically tells you how many grams of product you get for every
The theoretical yield is calculated by taking into account the stoichiometry of the reaction and the actual yield is measured after the reaction is finished.
In your case, a given reaction's stoichiometric calculations tell you that you can theoretically produce
However, you perform the reaction and you collect
#100 color(red)(cancel(color(black)("g theoretical"))) * "42.5 g actual"/(55.9color(red)(cancel(color(black)("g theoretical")))) = "76.0 g actual"#
So, if the reaction produces
#color(green)(|bar(ul(color(white)(a/a)color(black)("% yield" = 76.0%)color(white)(a/a)|)))#
The answer is rounded to three sig figs.