Answer:
The number of representative particles in 11.5 moles of potassium bromide are 6.92 × 10²⁴ formula units of KBr.
Solution:
As we know that 1 mole of any substance exacly contains 6.022 × 10²³ particles. Mathematically;
Moles = Number of Particles ÷ 6.022 × 10²³
Solving for Number of Particles,
Number of Particles = Moles × 6.022 × 10²³
Putting values,
Number of particles = 11.5 mol × 6.022 × 10²³ particles.mol⁻¹
Number of Particles = 6.92 × 10²⁴ formula units of KBr