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2011 Chemistry – James Ruse ( Practise Mode Multiple Choice )

Given the following ionization/dissociation of hypothetical acids and bases in water:

The molar heat of combustion of ethanol is 1367 kJ mol-1. A 2.510 g sample of ethanol was combusted in heating a certain mass of water from 25oC to 45oC. 80% of the heat released was absorbed by the water. What was the quantity of water heated?

20 mL of 0.08 mol L–1 HCl is mixed with 30 mL of a 0.05 mol L–1 NaOH. What is the pH of the resultant solution ?

In order to determine the relative activity of four metals, each metal was placed in the salt solutions of the other metals and observed for signs of a reaction. The results are displayed in

A sample was tested for its approximate pH using several indicators. The results are given in the table.

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Which of the following changes will always shift equilibrium to the left ?

How many structural isomers can the compound with the molecular formula, C2H3Cl2F have?

The concentration of chloride ion in river water was determined by titration with AgNO3 solution using a suitable indicator. 25.00 mL samples of river water were titrated with 1.034 x 10–2 mol L–1 AgNO3. The average titre was 22.60 mL. What is the concentration of the chloride ion in the river water?

What are the volumes in litres of 1 mole of helium gas and 1 mole of nitrogen gas respectively at 25 oC and 100 kPa ?

What is the correct burette reading in mL?

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The half-equations for the vanadium redox cell are given below.

Which of the following would be a possible industrial source of sulfur dioxide?

What is the IUPAC name of the following compound ?

Which of the following is a Bronsted- Lowry acid – base reaction?

What is the systematic name of the following compound?

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Which of the following chemicals would decolourise bromine water the quickest in the presence of UV light?

Why is radon-226 a radioactive isotope?

In which of the following alternatives are the compounds listed in order of increasing boiling point ?

What products would result from the catalytic cracking of a 15-carbon alkane?

Ozone exhibits greater reactivity than the oxygen molecule. Which statement best explains this?

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