Octet

Octet / Pka Table

HCN

The pKa of HCN is 9.2. Hydrogen cyanide. A lower pKa means a stronger acid and a more stable conjugate base.

Pka Table details

Compound

HCN

Pka

9.2

Notes

Hydrogen cyanide

This is one row of the pKa · protecting groups sheet - print all 31 pKa values on one page.

Pka Table

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HI

The pKa of HI is -10. Strongest common acid. A lower pKa means a stronger acid and a more stable conjugate base.

HBr

The pKa of HBr is -9. A lower pKa means a stronger acid and a more stable conjugate base.

HCl

The pKa of HCl is -7. A lower pKa means a stronger acid and a more stable conjugate base.

H₂SO₄

The pKa of H₂SO₄ is -3. First proton. A lower pKa means a stronger acid and a more stable conjugate base.

HNO₃

The pKa of HNO₃ is -1.4. A lower pKa means a stronger acid and a more stable conjugate base.

H₃O⁺

The pKa of H₃O⁺ is -1.7. Hydronium ion. A lower pKa means a stronger acid and a more stable conjugate base.

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