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

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Q. Hydrolysis reactions are catalyzed by enzymes called ___________

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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. Which of the following is the correct equation?

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

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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. Buffer capacity is maximum when __________

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Q. The buffer capacity is equal to __________

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

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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. 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. 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. 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 pH of a mixture of 0.10M acetic acid and 0.20M sodium acetate. The pKₐ of acetic acid is 4.76.

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Q. Which can act as buffer?

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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. Aqueous solution of the detergents are _________

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Q. If pKb for fluoride at 25°c is 10.83, the ionization constant of hydrofluoric acid in water at this temperature is?

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Q. K1 and K2 for oxalic acid are 6.5×10⁻² and 6.1×10⁻⁵ respectively. What will be the [OH⁻] in a 0.01M solution of sodium oxalate?

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