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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?

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

X+Y\rightarrow 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 compound.

(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)

 

Answers (1)

Answer: D 

Solution: X + Y\rightarrow P

X and Y will combine to make a product P. X and Y are elements because they cannot be broken down into simpler substances. The product P is called compound and it will not have any property of elements X and Y.

The composition of elements in product will be fixed: If N moles of element X is present that means moles of element Y will be present. This product will be pure.

Hence statement (i), (iii) and (iv) are correct statements. Therefore the correct option of this question is option D.

 

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