The reaction will be: FeBr2 + K --> KBr + Fe
Balancing gives: FeBr2 + 2K --> 2KBr + Fe
The molar mass of FeBr2 is 55.85 + 2*79.9 = 215.65 g/mol.
We divide 40 g / 215.65 g/mol = 0.185 mol FeBr2
Based on stoichiometry:
(0.185 mol FeBr2)(2 mol KBr/1 mol FeBr2) = 0.370 mol KBr
Stirring and agitating chemical reactions is desirable and stirring reflux systems or any system under heating is necessary to a distribute the heat evenly throughout the system and b) to prevent splashing and boilovers.
The correct answer is D) Ar
The answer is heart
good luck!
Answer:
Correct answer is (C) Silicon has the ability to form a partial double bond with a halogen through the overlap of its d-orbital with a p-orbital of the halogen
You question did not complete as the options are missing. See the options below;
A) The larger silicon atoms permit better overlap of its atomic orbitals with those of the halogens than the smaller carbons atoms do.
B) The large electronegativity difference between silicon and the halogens makes their bonds stronger than those of carbon.
C) Silicon has the ability to form a partial double bond with a halogen through the overlap of its d-orbital with a p-orbital of the halogen.
D) Silicon has a larger effective nuclear charge than carbon which allows it to bond more strongly to the more negative halogens than carbon.
E) Carbon-halogen bonds are unusually weak
Explanation:
Silicon reacts vigorously with halogens to form siliconhalides. The d subshell has 5 orbitals and halogen carries seven valence electronics with 5 in its p-orbital. When they react, they form stronger bonding than carbonhalide
