Question

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

\[\ce{X + Y -> P}\]

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

Options

• (i), (ii) and (iii)

• (i), (ii) and (iv)

• (ii), (iii) and (iv)

• (i), (iii) and (iv)

Answer 1

(i), (iii) and (iv)

Explanation:

\[\ce{X + Y -> P}\]

X and Y are elements hence, cannot be broken down into simpler substances. P is a compound hence it has fixed composition.