Berapa gram NaCl dan berapa gram air masing-masing diperlukan untuk membuat 100 gram larutan NaCl 2 molal ? ( Ar Na=23, Cl=35,5 )
nobert
Massa NaCl = x massa air = 100 - x 2 = x/ 58.5 * 1000/100-x 2 = 1000 x / 5850 - 58,5x 11700 - 117x = 1000 x x = 10,48 massa air = 100 - 10,48 = 89,52
massa air = 100 - x
2 = x/ 58.5 * 1000/100-x
2 = 1000 x / 5850 - 58,5x
11700 - 117x = 1000 x
x = 10,48
massa air = 100 - 10,48 = 89,52