Question

*MEDAL WILL BE AWARDED*
Calculate the mass of Na2CO3 (s) needed to produce 240 ml of carbon dioxide from 2 mol/dm3 ethanoic acid (CH3COOH)

Answer 1

omgz a medal

so write an equation, balance it

convert 240 mL of CO2 gas to moles (ps. 1 mole= 22.414 L)

use the coefficients to find how many moles of Na2CO3 you need

in this manner:
if, aA + bB <-> cC ..... moles of A/a=moles of C/c

then convert to mass of Na2CO3

moles=mass/molar mass

ps. disregard the density of acetic acid, it's just there to throw you off

Answer 2

Thannk you so much! :)