if you add 0.056 moles of HC2H3O2 to 0.064 moles of NH3, how many moles of each are actually neutralized?

1 answer

HAc + NH3 ==> NH4Ac
0.056..0.064.....

Since these are 1:1 (1 mole HAc neutralizes exactly 1 mole NH3), then you can see that you can't react more than 0.056. So all of the HAc reacts and leaves 0.064-0.056 = 0.008 mole NH3 unreacted. How much NH4Ac is formed. 0.056 mole of course.