So today we’re tackling the humble washing soda… AKA: soda ash, washing ash, sodium carbonate, and Na2CO3 (10H2O). For sanity’s sake, we’ll drop the 10H2O part… if you’re wondering what that means, *technically* what we know as washing soda is sodium carbonate decahydrate, which only means that water molecules are clinging to it. Anhydrous sodium carbonate, if you’ve seen…