In: Chemistry
Titanium reacts with iodine to form titanium(III) iodide, emitting heat, via the following reaction:
2Ti(s)+3I2(g)→2TiI3(s),ΔHorxn=−839kJ
Part A:
Determine the mass of titanium that reacts if 1.52×103 kJ of heat
is emitted by the reaction. Express your answer to three
significant figures and include the appropriate units.
Part B
Determine the mass of iodine that reacts if 1.52×103 kJ of heat is emitted by the reaction.
Express your answer to three significant figures and include the appropriate units.
2Ti(s) + 3 I2(g) ------------ 2TiI3(s) ,ΔHorxn=−839kJ
Part-A
Molar mass of Ti = 47.87 grams/mole
According to equation ,
mass of Ti for liberation of 839 KJ of heat = 2x47.87 grams
mass of Ti for libertaion of 1.52x10^3 KJ of heat = ?
= 2x47.87x1.52x10^3/839
= 173.45 grams.
mass of Ti = 173 grams.
Part-B
Molar mass of Iodine = 126.9 grams/mole ( for I2 = 253.8)
According to equation,
mass of Iodine for liberation of 839 Kj of heat = 3x 253.8 grams/mole
mass of Iodine for liberation of 1.52x10^3KJ of heat = ?
= 3x253.8x1.52x10^3/839
= 1379.4 grams
Mass of Iodine = 1.38x103grams.