Question

1. Two chemical species X and Y combine together to form a product P which contains both X and Y
X + Y → P
X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the
following concerning the species X, Y and P are correct?
(i) P is a compound
(ii) X and Y are compounds
(iii) X and Y are elements
(iv) P has a fixed composition
(a) (i), (ii) and (iii) (b) (i), (ii) and (iv) (c) (ii), (iii) and (iv) (d) (i), (iii) and (iv)
of the following correctly renresents 360p of water?
TAL​

Answer 1

Answer:

(i), (iii), (iv) are correct statements

Explanation:

P is the product of two or more elements. Therefore P is a compound

It is given that X & Y cannot be broken down by simple chemical reactions. Therefore, they are elements. Compounds can be broken in to its constituent elements with the help of chemical reaction.

Since P is a compound and in accordance to postulates of Dalton's atomic theory, compounds have fixed ratio of simple whole numbers

Answer 2

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Two chemical species X and Y combine together to form a product P which contains both X and Y .

X + Y → P

X and Y cannot be broken down into simpler substances by simple chemical reactions . Which of the following concerning the species X , Y and P are correct ?

(i) P is a compound

(ii) X and Y are compounds

(iii) X and Y are elements

(iv) P has a fixed composition

• (a) (i) , (ii) and (iii)

• (b) (i) , (ii) and (iv)

• (c) (ii) , (iii) and (iv)

• (d) (i) , (iii) and (iv) ✔️

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(d) (i) , (iii) and (iv)

• P is a compound because it is formed due to combination of two chemical species X and Y .

• X and Y are elements because they cannot be broken down into simpler substances by simple chemical reactions .

• P has a fixed composition because it is formed due to combination of X and Y in fixed ratio .

$\green{ \large \underline{ \mathbb{\underline{KNOW\:MORE: }}}}$

• Elements

A substance that cannot be broken down into simpler substances by chemical means. An element is composed of atoms that have the same atomic number .

• Compounds

Compounds are chemical substances made up of two or more elements that are chemically bound together in a fixed ratio .