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Va rogg sa ma ajutati !



Sa se determine concentratia procentuala a unei solutii formata din : 1800 grame de apa si 5 moli de soda caustica .................................................................



Am nevoie !!!! URGENTTTT !!!!!!!!!!!


Răspuns :

1molNaOH=23+16+1=40gNaOH 5moli=200gNaOH 1800+200=2000g sol NaOH 2000g sol NaOH.........200g NaOH 100g NaOH..................xg NaOH X=100*200/2000=10%