chem help..please!

<p>asprin behaves as an acid according to the equation shwon. Calculate Kb for teh C9H7O4- ion. (Ka=3x10^-4)
HC9H7O4+H2O<--->H3O++C9H7O4-</p>

<p>Isn't Kb just 1.0e-14 divided by the Ka value?</p>

<p>I know this is oober ez but my chem trache keeps telling me Im wrong, but my lab results beg to differ.
What is the balanced equation for
KMnO4 + Na2C2O4</p>

<p>double replacement: K2C2O4 + NaMnO4...but wait...where be the precipitate? loll i'm too tired for this...is C2O4 supposed to be CrO4 b/c that would make more sense...</p>

<p>nope its C2O4.
Half reactions are involved I thot</p>

<p>then it's redox- check your chart, dude</p>