Gases questions | form five Chemistry

a sample of ammonia gas with a volume of 3.5dm³ at a pressure of 1.68atm was compressed to a volume of 1.35dm³ at constant temperature.

1. Calculate the final pressure of the gas.
2. Name and state the governing gas law in (i)

Answer / Solution

UNSOLVED

Define the following:

1. Relative density of a gas.
2. Normal density of a gas.

Answer / Solution

UNSOLVED

1. Show that the relative molecular mass of ethanoic vapor at 1 atm pressure and 400K gave a result of 2.74g/dm³. Assuming ideal condition, calculate the apparent molecular weight of ethanoic acid under these conditions.
2. What can you deduce from your results in (i)? Briefly explain.

Answer / Solution

UNSOLVED

A 0.0721g of water vaporised at 150^oC and 755 mmHg pressure occupied a volume of 140cm³. Show that the relative molecular mass of water vapour proves the formula for steam.

Answer / Solution

UNSOLVED

State why was it necessary to modify the ideal gas equation and show how the modified equation looks like. Define all symbols in the equation.

Answer / Solution

UNSOLVED