Q. Calculate the pKₐ of lactic acid, given that when the concentration of lactic acid is 0.010M and the concentration of lactate is 0.087M, the pH is 4.80.

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Q. Calculate the ratio of the concentrations of acetate and acetic acid required in a buffer system of pH 5.30.

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Q. Assertion A: pH of a buffer solution solution does not change on dilution.
Reason R: On dilution the ration of concentration of salt and acid (or base) remains unchanged.

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Q. Which of the following mixture in aqueous solution of equimolar concentration acts as a buffer solution?

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Q. 1M NaCl and 1M HCl are present in an aqueous solution. The solution is ____________

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Q. For an acid buffer solution the pH is 3. The pH can be increased by ____________

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Q. The buffer capacity is equal to __________

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Q. Buffer capacity is maximum when __________

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Q. The processes i and ii are respectively.

i) CuSO₄ + 5H₂O → CuSO₄.5H₂O
ii) PCl₃ + 3H₂O → H₃PO₃ + 3HCl

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Q. Which of the following is not a condensation reaction?

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Q. Which of the following is the correct equation?

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Q. Consider the following reaction, in the presence of light

2H₂O + 2X → O₂ + 2XH₂

Which of the following statements is true?

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Q. Hydrolysis reactions are catalyzed by enzymes called ___________

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Q. What does it mean when we say that water acts as a “heat buffer”?

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Q. Which of the following does not react with water?

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Q. What trend does the reactivity of group II elements follow with water?

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Q. Which among the following statements is true about the following chemical reaction?

3Fe(s) + 4H₂O → Fe₃O₄ (s) + 4H₂

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Q. Identify the products formed in the following reaction.

CH₃COOCH₃ + H₂O → A + B

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Q. If pH of solution of NaOH is 12.0 the pH of H₂SO₄ solution of same molarity will be ____________

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Q. 1M NaCl and 1M HCl are present in an aqueous solution. What is the solution?

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