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Titanium reacts with iodine to form titanium(III) iodide, emitting heat, via the following reaction: 2Ti(s)+3I2(g)→2TiI3(s),ΔHorxn=−839kJ Part...

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.

Solutions

Expert Solution

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.

queen_honey_blossom answered 1 year ago
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