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Answer these 2 questions Predict how a buffer of HA and A- will resist change in pH...

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Chemistry

Answer these 2 questions

  1. Predict how a buffer of HA and A- will resist change inpH when a strong acid is added. Write down a reaction to representyour prediction.

  2. Acetic acid is CH3COOH, the Ka for acetic acid is1.8x10-5.  

    1. Write the dissociation reaction for aceticacid.

    2. Calculate the pH of a 0.240 M acetic acidsolution.

    3. Why would sodium acetate need to be added to acetic acidto create a buffer?

    4. Once the buffer of acetic acid and sodium acetate ismade write a reaction showing how the buffer resist a change in pHwhen HCl(aq) is added.

    5. Once the buffer of acetic acid and sodium acetate ismade write a reaction showing how the buffer resist a change in pHwhen NaOH(aq) is added.

Answer & Explanation Solved by verified expert
4.0 Ratings (446 Votes)
Buffer is made of a solution of weak acid its salt ofstrong baseNow say HA is a weak acid A is its salt of strongbase When a strong acid is added to their    See Answer
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