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Questions 41 – 43 relate to the following problem: A solution of sodium hydroxide contained 0.95 mol dm-3. Using phenolphthalein indicator, titration of 50.0 cm3 of this solution required 27.0 cm3 of a hydrochloric acid solution for complete neutralisation.                                       Question 41: How many moles of sodium hydroxide were neutralised? Give your answer to 4 d.p.

A hydrophobic compound will usually dissolve into an aqueous solvent. True or false? 

What is the net production of ATP molecules from the complete oxidation of one glucose molecule, assuming 100% efficiency?

Two atomic orbitals will overlap to form how many molecular orbitals?  

What is the pH of a 0.65 M solution of formic acid (Ka = 1.77 x 10-4)? Give your answer to 2 d.p.

Which one of the following is a non-polar bond?   

What type of intermolecular force is being shown in the this interaction?  

Which one of the following statements regarding a dynamic equilibrium is True?

Questions 41 – 43 relate to the following problem: You have a solution of 0.5 mol dm-3 sodium hydroxide. Titration of 125.0 cm3 of this solution required 30 cm3 of a hydrochloric acid solution for complete neutralisation.                                      What is the concentration of the hydrochloric acid in mol/dm3 (molarity)?

What mass of NaOH do we need to prepare 250 mL of a 3.5 M solution? (Molar mass of NaOH = 40 g/mol)