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11.5 grams of soduim metal are placed in a container with excess chlorine omce thd reaction...

11.5 grams of soduim metal are placed in a container with excess chlorine omce thd reaction is complete ,29.0 grams of soduim chloride are measured .what mass in grams of chlorine gas reacted?
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Answer #1

Answer

17.5903g

Explanation

The balanced equation for the reaction between sodium and chlorine is

2Na(s) + Cl2(g) ------> 2NaCl(s)

Stoichiometrically, 2moles of NaCl obtained from 1mole of Cl2

Number of moles = mass /molar mass

number of moles of NaCl obtained = 29.0g / 58.44g/mol =

0.4962mol

Number of moles of Cl2 gas reacted = 0.4962mol/2= 0.2481mol

mass = number of moles × molar mass

mass of Cl2 reacted = 0.2481mol × 70.9g/mol = 17.5903g

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