The half-equations for the vanadium redox cell are given below.
What is the systematic name of the following compound?
Which of the following chemicals would decolourise bromine water the quickest in the presence of UV light?
Which of the following would be a possible industrial source of sulfur dioxide?
Why is radon-226 a radioactive isotope?
How many structural isomers can the compound with the molecular formula, C2H3Cl2F have?
A sample was tested for its approximate pH using several indicators. The results are given in the table.
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 ?
In which of the following alternatives are the compounds listed in order of increasing boiling point ?
What is the IUPAC name of the following compound ?
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?
Which of the following is a Bronsted- Lowry acid – base reaction?
What is the correct burette reading in mL?
Which of the following changes will always shift equilibrium to the left ?
What products would result from the catalytic cracking of a 15-carbon alkane?