Author Question: According to the following reaction, how much energy is evolved during the reaction of 2.50 L B2H6 ... (Read 262 times)

MirandaLo · **on:** Aug 27, 2018

According to the following reaction, how much energy is evolved during the reaction of 2.50 L B2H6 and 5.65 L Cl2 (Both gases are initially at STP)? The molar mass of B2H6 is 27.67 g/mol.

B2H6(g) + 6 Cl2(g) 2 BCl3(g) + 6 HCl(g) Hrxn = -1396 kJ

A) 58.7 kJ
B) 156 kJ
C) 215 kJ
D) 352 kJ
E) 508 kJ

Question 2

In a density determination, a student measured 11.46 mL of a liquid. How many liters is this?

A) 11,460 L
B) 1.146 L
C) 0.1146 L
D) 0.01146 L
E) 1.146 L