Question

Consider a hypothetical reaction in which A and B are reactants and C and D are products. If 13 grams of A completely reacts with 21 grams of B to produce 15 grams of C, how many grams of D will be produced?

Answer 1

Answer on Question #53087 – Chemistry – General chemistry

Task: Consider a hypothetical reaction in which A and B are reactants and C and D are products. If 13 grams of A completely reacts with 21 grams of B to produce 15 grams of C, how many grams of D will be produced?

Solution:

1. Let's write an equation:

$$\begin{array}{l} 13\,g \quad 21\,g \quad 15\,g \quad x\,g? \\ \widehat{A} + \widehat{B} = \widehat{C} + \widehat{D} \end{array}$$

2. According to the Law of Mass, the products C and D will be produced as many, as grams of reactants A and B will be reacted completely.

$$x = (13 + 21) - 15 = 19\,g$$

Answer: 19 g of product D will be produced.

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