Ask Question
3 January, 22:08

Many soft drinks contain phosphate buffers. Calculate the ph of an 8 oz soft drink containing 4.4g of sodium dihydrogen phosphate (120g/mole) and 5.4 g of sodium hydrogen phosphate (142g/mol2

+4
Answers (1)
  1. 3 January, 22:19
    0
    H2PO4- = 4.4g x 1mol/120 = 0.037mol 0.037mol/

    0.24L = 0.15

    HPO4-2 = 5.4g x 1mol/142g =

    0.038mol 0.038mol/0.24L =

    0.16pH = pKa + log

    ([HPO4-2] / [H2PO4-]) pKa = 7.2

    pH = pKa + log (0.16 / 0.15)

    pH = 7.2
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Many soft drinks contain phosphate buffers. Calculate the ph of an 8 oz soft drink containing 4.4g of sodium dihydrogen phosphate ...” in 📘 Chemistry if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers