Buffer solutions are
Correct answer: A. Which resist in change in PH and POH
- A. Which resist in change in PH and POH
- B. Only in PH
- C. Only POH
- D. Does not resist
Explanation
Buffer solutions are solutions that resist changes in pH when an acid or base is added to them. They contain a weak acid and its corresponding conjugate base or a weak base and its corresponding conjugate acid. The presence of these conjugate pairs allows the buffer solution to neutralize added acid or base, preventing a significant change in pH.Buffer solutions are effective in maintaining pH because the weak acid/base can react with the added H⁺ or OH⁻ ions, forming the corresponding conjugate and water. This reaction helps to counteract the effect of the added acid or base on the pH of the solution.
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Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
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