How many grams of sodium reacts with sulfur If 15.6 g of sodium sulfide is formed.
| May 6, 2021 | education
1. We compose the reaction equation:
2 Na + S = Na2S
According to the equation: sodium – 2 mol and Na2S – 1 mol. We find their masses:
m (Na) = n * M = 2mol * 23g / mol = 46g
m (Na2S) = n * M = 1 mol * (23 * 2 + 32) = 78 g
2. Calculate the mass Na:
xg Na – 15.6 g Na2S
46 g Na – 78 g Na2S
Hence, x = 46 * 15.6 / 78 = 9.2 g.
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