compounds of boron and hydrogen are Ch. Ex 59 Diborane Reactivity with Halogens

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compounds of boron and hydrogen are Ch. Ex 59 Diborane Reactivity with Halogens 1 out of 3 attempts As Enter your answer in the provided box. Compounds of boron and hydrogen are remarkable for their unusual bonding and also for their reactivity. With the more reactive halogens, for example, diborane (B2H6) forms trihalides even at low temperatures: B2H6(8) + 6 Cl2(g) 2 BC13(g) + 6 HCI(g) Hrxne:-755.4 kJ How much heat is released when 7.806 kg of diborane reacts? (Give your answer in scientific notation.) 2.131 x10 kJ View Details of Last Check Answer

Explanation / Answer

delta Hrxn = -755.4 KJ.

in this reaction one mole diborane react.

so for one diborane reaction, 755.4 KJ heat is produced.

Molar mass of B2H6 is 27.6696 g/mol

we have 7.806 kg = 7806 gm diborane = mass / molar mass = 7806 / 27.6696 = 282.11 mole.

so Heat released = 282.11 * 755.4 = 2.13 * 10^5 KJ (answer)

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