Question

Consider the following statements and arrange them in the order of true/false as given in the codes :
$S_1$: The reaction $2H_2{O}_2\to 2H_{2}O+O_2$ is not an example of a redox reaction.
$S_2$: The equivalent mass of $K_{2}C{r}_2{O}_7$ in acidic medium is molar mass divided by two.
$S_3$: The equivalent mass of a substance can be calculated without considering the reaction it undergoes.

• A. TFT
• B. FTF
• C. FFF
• D. TTT

Answer 1

The correct option is C FFF

The reaction $2H_2{O}_2\to 2H_{2}O+O_2$ is a redox reaction. One molecule of $H_2{O}_2$ is oxidized and other molecule of $H_2{O}_2$ is reduced.

The equivalent mass of $K_{2}C{r}_2{O}_7$ in acidic medium is molar mass divided by six as the change in the oxidation state per formula unit is 6.

The equivalent mass of a substance cannot be calculated without considering the reaction it undergoes, as it depends on the change in the oxidation state per formula unit of oxidant or reductant.

Therefore, option C is correct.