Question

question 6: a chemical equation for the reaction between calcium hydroxide, ca(oh)2, and sulfuric acid, h2so4, is shown. the masses of some of the reactants and products are given in grams ca(oh)2 + h2so4 --> caso4 + 2h2o 74g? 136g 36g how many grams of sulfuric acid were used in the reactions? a 62g b 98g c 36g d 100g

Explanation:

Step1: Apply law of conservation of mass

According to the law of conservation of mass, the total mass of reactants equals the total mass of products in a chemical reaction.

Step2: Calculate mass of sulfuric acid

Let the mass of $H_2SO_4$ be $x$. Then $74 + x=136 + 36$. Solving for $x$ gives $x=(136 + 36)-74$.
$x = 98$ g

Answer:

B. 98g