Question

For a first order reaction $$\mathrm{A}⟶\mathrm{Product}$$ with initial concentration x mol L⁻¹, has a half life period of 2.5 hours. For the same reaction with initial concentration ${\displaystyle \left(\frac{\text{x}}{2}\right)}$ mol L⁻¹ the half life is

Options

• (2.5 × 2) hours

• ${\displaystyle \left(\frac{2.5}{2}\right)}$ hours

• 2.5 hours

• Without knowing the rate constant, t_1/2 cannot be determined from the given data

Answer 1

2.5 hours