Mix 40 g of 10% NaOH solution with 10 G of 50% naoh solution calculate the mass fraction of the resulting solution
| July 5, 2021 | education
The mass fraction of the solution obtained by mixing two solutions with different concentrations is determined according to the formula.
W (NaOH) = W1 • m1 + W2 • m2 / m1 + m2 = 10% • 40 g + 10% • 50 g / 50 g = 18%.
The mass of alkali in the final solution.
m (NaOH) = W (NaOH) • m (solution) / 100% = 18% • 50 g / 100% = 9 g.
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