calculate-the-h3o-and-ph-of-060-m-of-a-strong-diprotic-acid-with-pka2-25102-prov

Question

Calculate the [$$H_{3}$O^{+}$$] and pH of a strong diprotic acid with pK_{a2} = 2.5 ×$$10^{−2} at $$the given concentrations. At which given concentration(s) does the assumption "x is negligible" not applicable?i. 1.0 Mii. 0.10 Miii. 0.01 M

Accepted Answer

i. [$$H_{3}O$$^{+}$$] = 1.0 M; pH = 0ii. [H$$_{3}$$O^{+}$$] = 0.12 M; pH = 0.92iii. [$$H_{3}$O^{+}$$] = 0.016 M; pH = 1.8x is not negligible in ii and iii.

Answer

i. [$$H_{3}O$$^{+}$$] = 1.3 M; pH = 0ii. [H$$_{3}$$O^{+}$$] = 0.21 M; pH = 0.68iii. [$$H_{3}$O^{+}$$] = 0.15 M; pH = 0.96x is not negligible in all of the given concentrations.

Answer

i. [$$H_{3}O$$^{+}$$] = 1.0 M; pH = 0ii. [H$$_{3}$$O^{+}$$] = 0.10 M; pH = 1.1iii. [$$H_{3}$O^{+}$$] = 0.016 M; pH = 1.8x is not negligible in iii.

Answer

i. [$$H_{3}O$$^{+}$$] = 1.2 M; pH = 0.52ii. [H$$_{3}$$O^{+}$$] = 0.12 M; pH = 0.92iii. [$$H_{3}$O^{+}$$] = 0.016 M; pH = 1.8x is not negligible in all of the given concentrations.

Calculate the [H3O+] and pH of a strong diprotic acid with pKa2 = 2.5 ×10−2 at the given concentrations. At which given concentration(s) does the assumption "x is negligible" not applicable?i. 1.0 Mii. 0.10 Miii. 0.01 M

Calculate the [H₃O⁺] and pH of a strong diprotic acid with pK_a2 = 2.5 ×10⁻² at the given concentrations. At which given concentration(s) does the assumption "x is negligible" not applicable?
i. 1.0 M
ii. 0.10 M
iii. 0.01 M