Question

Consider the following statements:
1) If all the reactants are not taken in their stoichiometric ratio, then at least one reactant will be left behind.
2) 2 moles of $H_2\left(g\right)$ and 3 moles of $O_2\left(g\right)$ produce 2 moles of water.
3) Equal wt. of carbon and oxygen are taken to produce $C{O}_2$ then $O_2$ is the limiting reagent.
The above statements are:
(T = True, F = False)

• A. TTT
• B. FTF
• C. FFF
• D. TFT

Answer 1

The correct option is A TTT

For statement 1,
If reactants are not taken in their stoichiometric ratio, then at least one reactant will be in excess and either one or more than one reactant will be the limiting agent.
For statement 2,
$2H_2+O_2\to 2H_{2}O$
Limiting reagent will be hydrogen and 2 moles of water will be produced.
For statement 3,
$C+O_2\to C{O}_2$
Let the amount of reactant be 1 g.
Moles of carbon $=\frac{1}{12}$ mol
Moles of oxygen $=\frac{1}{32}$ mol
Since moles of oxygen are lesser than carbon, it will be the limiting reagent. Hence, all three statements are true.