Chemistry
The empirical formula of a hydrocarbon is C2H3. The hydrocarbon has a relative molecular mass of 54. (At wt: H = 1, C = 12)
(a) What is the molecular formula of the hydrocarbon?
(b) Draw the structural formula of the hydrocarbon.
(c) Give the general formula of the hydrocarbon.
Related Questions
Study the information given in the table below and answer the questions that follow. (Note- the letters do not represent the actual symbols of the elements)
Element Electronic configuration Ionisation energy kjmol-1 X 2,2 900 Y 2,8,2 738 Z 2,8,8,2 590 (a) Explain why element X has highest ionisation energy.
(b) To which period does Z belong?
(c) Draw the electron dot structure of the compound formed between Z and oxygen.
A student prepared a Potassium sulphite solution in the lab and added few drops of barium nitrate solution to it. He observed a white precipitate being formed in the test tube. On addition of dilute hydrochloric acid to the white precipitate and mixing it, he observed that the precipitate disappeared.
(a) Name the white precipitate.
(b) Write a balanced chemical equation for the reaction between dilute hydrochloric acid and the white precipitate.
(c) Name the gas evolved in the above reaction.
Study the given figure and answer the given questions:
(a) Identify the application of electrolysis demonstrated above.
(b) Which metal is protected in the above process?
(c) Why should the metal be protected?
Nita's father bought a basket of ripe mangoes. While opening it she found a small sachet containing a white crystalline powder along with the mangoes. She was told that it is a chemical that releases a gas when it comes in contact with moisture, that induces ripening of fruits.
(a) Name the chemical powder in the sachet.
(b) Name the gas.
(c) Give a balanced chemical equation for the reaction that results in the evolution of this gas.