Answer to Question #223525 in General Chemistry for jojo

Question

A 16.45 gram sample of chromium is heated in the presence of excess iodine. A metal iodide is formed with a mass of 96.72 g. Determine the empirical formula of the metal iodide.

Answer 1

Mass of Chromium = 16.45

Molar Mass of Chromium = 51.9961

= 0.316 mol

Molar Mass of iodide = 126.9

= 96.72-16.45/126 = 0.633

The ratio between

Chromium and iodinei is1:2.So, the empirical formula is therefore Cr2I