BPSC (Bihar PCS) 2025 · Question 78 of 145
General Science
The pH of a solution is calculated using the formula: pH = -log[H⁺] For 0.1 N HCl, which is a strong acid and dissociates completely in water, the concentration of H⁺ ions is 0.1 M (moles per liter). pH = -log(0.1) = 1.0.
Source: 71st BPSC CCE Prelims 2025 (Set H)
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