Answer to Question #194983 in General Chemistry for Diana

Question

What mass of CoCl3 is formed from the reaction of 3.478x10^23 atoms Co with 57.92L of Cl2 gas at STP?

Answer 1

The reaction between Co and Cl₂to produce CoCl₃

 is given by,

 2Co   +      3Cl₂→       2CoCl₃

2 mol            3 mol          2 mol

117.86 g      212.73 g     330.58 g

Now from the above balanced chemical reaction

Let Co be completely consumed in the reaction,

since 117.86 g of Co produces =330.58 g of CoCl₃

So 1 g of Co produces =$\frac{330.58}{117.86} g$ Of CoCl₃

Hence 34.00g of Co will produce :-

$=\frac{34.00×330.58}{117.86} g$ of CoCl₃

=$95.36g$ of CoCl₃

Hence, the amount of CoCl₃ formed would be 95.36gram