pH value of 0.001 M NaOH solution is _____ — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

**Step 1: Identify the concentration of OH⁻ ions** NaOH is a strong base that completely dissociates: NaOH → Na⁺ + OH⁻ Since [NaOH] = 0.001 M, then [OH⁻] = 0.001 M = 1 × 10⁻³ M **Step 2: Calculate pOH using the formula** pOH = -log[OH⁻] pOH = -log(1 × 10⁻³) pOH = 3 **Step 3: Use the relationship between pH and pOH** At 25°C: pH + pOH = 14 **Step 4: Calculate pH** pH = 14 - pOH pH = 14 - 3 pH = 11 Therefore, the answer is 11.00.