4. Which of the following NOT TRUE about real gas 1. The molecules actually do occupy some space
II. Intermolecular force are negligible
III. No repulsion between molecules when molecules
become closer
IV. When the distance between molecules decrease,
the attraction or repulsion become greater
O A. II & III
O B.
C. IV
O D. 11 & IV

The answer is D.

Explanation:

Intermolecular force are negligible

When the distance between molecules decrease,

the attraction or repulsion become greater

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

your answer would be “dry”