Chapter 9, Problem 59A

Interpretation Introduction

Interpretation: The correct option to determine the limiting reactant for the given reaction needs to be determined.

  $\text{2 A (10}\text{.0g) + B (5}\text{.00g) }\stackrel{}{\to }\text{ 5 C}$

Concept Introduction: A chemical reaction involves the conversion of reactant to product by breaking and making of chemical bonds.

There can be more than one reactant molecules involve in a chemical reaction to form the products. The reactant which is present in limited amount in a chemical reaction is called as limiting reactant.

Answer to Problem 59A

Correct answer: Option (C) is correct.

Explanation of Solution

Reason for correct option: To determine the limiting reactant;

• Step -1 : calculate moles of each reactant
• Step-2 : determine the limiting reactant with the help of mole ratio of both reactants.
• Step-3 : determine the mole and mass of product with the help of mole ratio of product and limiting molecule.

Thus option (C) must be correct.

Conclusion

Reasons for incorrect options: Coefficients of balance chemical reaction do not provide information about the limiting reactant so option (a) is incorrect.

The masses of reactant do not provide information about the limiting reactant so option (b) is incorrect. To determine the limiting reactant, the mole ratio must be used so option (d) and (e) are incorrect.