Consider the following reactions: N2 + 3H2 = 2NH3. Experimental data indicate the initial rate of change for nitrogen is -0.060 M/sec?

a)
N₂ + 3H₂ → 2NH₃
Initial rate of change for H₂ = (-0.060 M/s) × 3 = -0.180 M/s

b)
Initial rate of change for ammonia = (0.060 M/s) × 2 = 0.120 M/s

c)
Initial rate of reaction = 0.060 M/s