Two substances, A and B were made to react to form a third substance, A2B according to the following reaction: 2A + B → A2B Which of the following statements concerning this reaction are incorrect?
(i) The product A2B shows the properties of substances A and B.
(ii) The product will always have a fixed composition.
(iii) The product so formed cannot be classified as a compound.
(iv) The product so formed is an element.
(a) (i), (ii) and (iii)
(b) (ii), (iii) and (iv)
(c) (i), (iii) and (iv)
(d) (iii) and (iv)
Answers
(c) (i), (iii) and (iv)
Explanation:
2 atoms of a substance A and one atom of a substance B forms a compound A2B. As we can see that the elements are present in a fixed ratio, i.e. 2:1, the compound formed would not show the properties of the substances A and B.
From this, we can clearly conclude that the statements (i) and (ii) are correct resulting in the rest of the options to be incorrect.
Knowledge Bytes:
➡ The given scenario is very similar to that of the production of water H2O in which two atoms of hydrogen and one atom of oxygen to form water.
➡ A compound is formed when atoms of two different substances are mixed together in a fixed ratio. The characteristics of a compound are not similar to that of the constituents.
Answer:
A chemical reaction is a mechanism that leads to the chemical transformation of one group of chemical compounds into another
Explanation:
so option (c) (i), (iii) and (iv) is correct answer