What is Keg for the reaction N2 + 3H2 = 2NH2 if the equilibrium
concentrations are [NH3] = 2 M [N2] = 3 M, and [H2] = 1 M?
O A. Keq = 0.67
O B. Keq = 0.75
O C. Keq = 1.33
O D. Keq = 1.5

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.