Question

OR Answer only ONE of the choices. Your peers also need to participate. You may politely correct anyone else's answer. Is the statement true or false? Give an explanation for your answer. 1) Ka and pH are the same things. 2) pH can change with temperature 3) an acidic buffer is made from a weak acid and weak base; 4) use the indicator table to see which indicator you will use for a titration of CH3COOH and NaOH; 5) what is the difference between equivalence point and end point? 1) Displaying

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Answer 1

1. Ka and pH are the same things .(false) k determines the ability of a weak acid where as PH is a measure of acidity/basicity of a solution. 2 PH can change with temperature (true) - As kw changes with temperature, pH decreases with temperature. Cincreases) 3. AA acidic busser is made from a weak acid and weak base. (false) It is made from a weak Lacid and acid salt of this weak with a strong and 4. Use the indicator table to see which indicator you will use for the titration of CH₂ Cook and NaOH. (true) ( To notice the colour change near the expected equivalence point, Different indicators have different range) Equivalence point is the point at which an and titrant are chemically equivalent. End point is the point where the added Indicator shows a significant change in its colour. s.