Fill in the blanks by selecting an appropriate option. The reaction $2 \mathrm{C}+\mathrm{O}_{2} \ri

Question

Fill in the blanks by selecting an appropriate option. The reaction $2 \mathrm{C}+\mathrm{O}_{2} ightarrow 2 \mathrm{CO}$ is carried out by taking 24 g of carbon and 96 g of $\mathrm{O}_{2}$. Choose the correct option.\ A. Reactant left in excess is oxygen.\ B. 76 g of C should be taken to complete the reaction.\ C. 32 g of oxygen is left in excess.\ D. 2 moles of CO are formed.\ E. Carbon is the limiting reagent.\

Professor PC Thomas Classes · Answer

(b): For complete reaction number of moles are calculated. \ i) Reactant left in excess is oxygen.\ ii) 2 moles of oxygen is left as excess reactant. 2 moles of oxygen is equal to 64 g of oxygen.\ iii) 2 moles of CO is formed\ iv) As per equation 24 g C reacts with $32 \mathrm{~g} \mathrm{O}_{2}$\ $	herefore \quad$ For $96 \mathrm{~g} \mathrm{O}_{2}$ to be used $\frac{24}{32} 	imes 96=72 \mathrm{~g} \mathrm{C}$ is needed.\ 72 g or 6 moles of carbon should be taken for the complete reaction to occur.\