Question

CaCl2 can be melted to produce calcium metal and give off chlorine gas. The equation for this is CaCl2(l) Ca(s) + Cl2(g). If 277.45 g CaCl2 were melted, how many grams of Ca(s) would be formed? (

Answer 1

82g

Step-by-step explanation:

CaCl2 : Ca 111g : 40g

227.45 : xg

xg= (40×227.5)/111

Answer 2

`m_(Ca)=99.982gCa`

Step-by-step explanation:

Hello, in this case, considering that the undergoing chemical reaction is:

`CaCl_2(l) \rightarrow Ca(s) + Cl_2(g)`

As we see a one-to-one molar relationship between calcium chloride and calcium, by stoichiometry and the given molar masses, the mass of calcium that would be formed is:

`m_(Ca)=277.45gCaCl_2*(1molCaCl_2)/(111gCaCl_2) *(1molCa)/(1molCaCl_2) *(40gCa)/(1molCa) \\m_(Ca)=99.982gCa`

Best regards.