1. Which of the acids studied are weak? Which are strong? H ow can you tell from
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Question
1. Which of the acids studied are weak? Which are strong? H ow can you tell from the data? 2. Calculate the pKa for the weak acid from the Ka values given in the lab manual. experimentally determined pKa compare with the calculated values 3. Examine the data for two diprotic acids of the same concentration. What is the volume at equivalence for each? Comment on the similarities Using the graph paper attached, g equivalence, volume at equivalence, pH at equivalence, final pH) 4. enerate a good graph of pH vs. Volume Titrant for your attach it to this report. Label the important points on the graph (initial pH, pH at V 5. A buffer is a mixture of an acid and its conjugate base. Buffers resist changes to pH when strong base or strong acid are added. For the solution you titrated, identify the buffer region o the graph based on the data.Explanation / Answer
Ans 1 :
The acids that dissociated completely are strong acids and the acids that did not dissociate completely are called as weak acids.
So here HNO3 and K2SO4 are strong acids , as they dissociated completely , which decreased the pH of the solution.
The CH3COOH is a weak acid , as it could not dissociate completely , and so the pH of the solution was higher.
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