According to the balanced equation below, which of the following is equivalent to how many moles of alcl3 can be made from 4.0 moles of cl2? 2al + 3cl2 > 2alcl3a) 2.7 molesb) 4.0 molesc) 8.0 molesd) 24 moles

a) 2.7 mol

Explanation.:

2Al + 3Cl₂ ⟶ 2AlCl₃

We want to convert moles of Cl₂ to moles of AlCl₃.

Choose the conversion factor ( the correct molar ratio)

It is or either or

We choose the one with the desired units (mol AlCl₃) on top.

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :