Chemistry
(i) Why is it necessary to compare gases at STP ?
(ii) What are the STP conditions ?
Gas Laws
1 Like
Answer
(i) Since volume of a gas changes remarkably with change in temperature and pressure, it becomes necessary to choose standard values of temperature and pressure to which gas volumes can be referred.
(ii) The standard values chosen are 0°C or 273 K for temperature and 1 atm or 760 mm of Hg for pressure. These values are known as standard temperature and pressure (STP).
Answered By
1 Like
Related Questions
The electronic configuration of three elements A, B and C are as follows :
A — 2, 8, 8, 2;
B — 2, 8, 7
C — 2, 4
(i) Which of these can form cations ?
(ii) Which of these can form anions ?
(iii) Write a formula of a covalent compound formed using these elements
(i) What do you understand by the term 'isotopes'?
(ii) Why do isotopes of an element possess identical chemical properties ?
(iii) Name the isotope of hydrogen which do not have a neutron in it.
What temperature in degree centigrade would be necessary to double the volume of a gas (initially at STP), if the pressure is reduced to half ?
Classify the following types of reactions:
(i) 2Al + Fe2O3 ⟶ Al2O3 + 2Fe
(ii) 2KClO3 ⟶ 2KCl + 3O2
(iii) BaCl2 + Na2SO4 ⟶ BaSO4 + 2NaCl