Question

Determine equivalent weight of carbon in the following :
(a) $C+O_2\to C{O}_2$
(b) $C+2H_2\to C{H}_4$
(c) $2C+H_2\to C_2{H}_2$
(d) $2C+2H_2\to C_2{H}_4$

• A. (a) $8g$ $O_2\equiv 3g$ $C$ (b) $1g$ $H\equiv 3g$ $C$ (c) $1g$ $H_2\equiv 12g$ $C$ (d) $1g$ $H_2\equiv 6g$ $H_2$
• B. (a) $4g$ $O_2\equiv 1g$ $C$ (b) $1g$ $H\equiv 3g$ $C$ (c) $1g$ $H_2\equiv 12g$ $C$ (d) $1g$ $H_2\equiv 3g$ $H_2$
• C. (a) $6g$ $O_2\equiv 3g$ $C$ (b) $1g$ $H\equiv 2g$ $C$ (c) $2g$ $H_2\equiv 10g$ $C$ (d) $1g$ $H_2\equiv 6g$ $H_2$
• D. None of these

Answer 1

The correct option is A (a) $8g$ $O_2\equiv 3g$ $C$ (b) $1g$ $H\equiv 3g$ $C$ (c) $1g$ $H_2\equiv 12g$ $C$ (d) $1g$ $H_2\equiv 6g$ $H_2$

As we know,
Equivalent mass is the mass of element which reacts with 8g of oxygen or 1g of hydrogen so,
(a) $32g$ $O_2\equiv 12g$ $C$
$8g$ $O_2\equiv 3g$ $C$
(b)$4g$ $H_2\equiv 12g$ $C$
$1g$ $H_1\equiv 3g$ $C$
(c)$2g$ $H_2\equiv 24g$ $C$
$1g$ $H_2\equiv 12g$ $C$
(d)$4g$ $H_2\equiv 24g$ $C$
$1g$ $H_2\equiv 6g$ $H_2$
(e)$6g$ $H_2\equiv 24g$ $C$
$1g$ $H_2\equiv 4g$ $C$
(f)$8g$ $H_2\equiv 36g$ $C$
$1g$ $H_2\equiv 4.5g$ $C$
Equivalent weight is not a definite property. It depends on the reaction and product formed.