1 mol alcohol reacts with Na to give what weight of hydrogen ?

Question

1 mol alcohol reacts with Na to give what weight of hydrogen ? (A)  1 g  (B)  2 g  (C)  3 g  (D)  3.5 g

Tardigrade Admin · Accepted Answer

underset overset2 mol1 mol2C2H5OH + 2Na arrow 2C2H5ONa + underset overset1 mol(1/2) molH2 The weight of (1/2) mol H2=(2/2)g=1 g Thus, 1 g H2 is produced when 1 mole of alcohol reacts with Na.

Q. $1 m o l$ alcohol reacts with $N a$ to give what weight of hydrogen ?

$1 g$

$2 g$

$3 g$

$3.5 g$

$1 m o l 2 m o l 2 C_{2} H_{5} O H + 2 N a \to 2 C_{2} H_{5} ON a + \frac{1}{2} m o l 1 m o l H_{2}$

The weight of $\frac{1}{2} m o l H_{2} = \frac{2}{2} g = 1 g$

Thus, 1 g $H_{2}$ is produced when 1 mole of alcohol reacts with $N a$ .

Q. 1mol alcohol reacts with Na to give what weight of hydrogen ?

1g

2g

3g

3.5g