6-When chlorine gas is bubbled into a solution of sodium bromide,the sodium brom

Question

6-When chlorine gas is bubbled into a solution of sodium bromide,the sodium bromide reacts to give bromine, a red-brown liquid, andsodium chloride (ordinary table salt). A solution was made bydissolving 19.8 g of sodium bromide in100.0 g of water. After passing chlorine through the solution,investigators analyzed the mixture. It contained 14.6 g of bromine and 11.0 gof sodium chloride. How many grams of chlorine reacted?
1 g

Explanation / Answer

Cl2 +   2Br- =>   Br2 + 2Cl- 19.8 - 14.6 = 5.2 grams bromide reacted 5.2 g Br- *(1 mol Br-/79.9g)*(1 mol Cl2 /2 mol Br-)*(70.9 g /molCl2) = 2.31 grams of Cl2

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