Question detail

How many grams of potassium sulfate (K2SO4) can be produced from 40 g of potassium (K) reacting with sulfuric acid (H2SO4)?

Try the question, check the answer, then read the explanation to understand the curriculum point.

At a glance

MCQ

Type

practice

Style

Topic

Use of amount of substance in relation to masses of pure substances

Question

80 g

The balanced equation is 2K + H2SO4 → K2SO4 + H2. From 40 g of K (1 mol), 80 g of K2SO4 is produced.

Confusing Reactants and Products

Students often confuse the masses of reactants with the masses of products when calculating from a balanced equation.

Carefully identify which substances are reactants and which are products in the balanced equation before performing calculations.

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