The value of [H3O+] and [OH–] ions in 0.001M HCl and 0.001M NaOH solutions will be -

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The value of [H₃O⁺] and [OH^–] ions in 0.001M HCl and 0.001M NaOH solutions will be -

[H₃O⁺] = 2.0 × 10^{– 3}g ion/litre

[OH^–] = 2.0 × 10^{– 14} g ion/litre

[H₃O⁺] = 12.4 × 10^{– 3} g ion/litre

[OH^–] = 2.0 × 10^{– 3} g ion/litre

[H₃O⁺] = 1.0 × 10^{– 3} g ion/litre

[OH^–] = 1.0 × 10^{– 3} g ion/litre

[H₃O⁺] = 1.0 × 10^–3 g ion/litre

[OH^–] = 1.0 × 10^–14 g ion/litre

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The value of H₃O⁺ ions in 0.001M HCl = 1.0 × 10³
g ion/litre. Because HCl is a monobasic acid so it gives one hydrogen ion per molecule. So by 0.001M (10^–3M) HCl, H⁺ ions are given = 10^{– 3} g ion/litre.NaOH also gives one OH¯ ion /molecule. In the same way by 0.001M NaOH, OH¯ ions are given = 1.0 × 10^–3 g ion litre.