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What mass of H2O is produced when 12.0 grams of HCl react completely in the equation 6HCl Fe2O32FeCl3 3H2O?
Wiki User
∙ 9y ago
The (already) balanced reaction equation itself (assuming that there should be an arrow in the equation between "3" and "2") shows that 3 moles of water are produced from every 6 moles of HCl that is reacted. The gram molecular mass of HCl is 36.46 and that of water is 18.02. Therefore, the ratio of the mass of water produced to the mass of hydrogen chloride reacted is [3(18.02)]/[6(36.45)], or 0.2472, to the justified number of significant digits. (The integers "2" and "3" in the ratio are exact.)
The mass of water produced is therefore (0.2472)(12.0) or 2.97 grams, to the justified number of significant digits.
Wiki User
∙ 9y ago
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