Question

Calculate the pOH of a solution that results from mixing 24 mL of 0.12 M HBrO(aq) with 26 mL of 0.14 M NaBrO(aq). The Ka value for HBrO is 2 x 10-9. A buffer consists of 0.17 M NaH2PO4 and 0.3 M Na2HPO4. Given that the K values for H3PO4 are, Ka1 = 7.2 x 10-3, Ka2 = 6.3 x 10-8, and Ka3 = 4.2 x 10-13, calculate the pH for this buffer.

A buffer consists of 0.17 M NaH₂PO₄ and 0.3 M Na₂HPO₄. Given that the K values for H₃PO₄ are, K_a1 = 7.2 x 10^-3, K_a2 = 6.3 x 10^-8, and K_a3 = 4.2 x 10^-13, calculate the pH for this buffer.