Question

____________ + H2SO4 --> KSO4 + H2

Answers

GPT-4o mini
To balance the chemical equation given:

\[
\text{?} + \text{H}_2\text{SO}_4 \rightarrow \text{KSO}_4 + \text{H}_2
\]

we need to identify the unknown reactant that can react with sulfuric acid (H₂SO₄) to produce potassium sulfate (KSO₄) and hydrogen gas (H₂).

The most likely reactant is potassium (K), as it can react with sulfuric acid.

Thus, if we use potassium as the reactant, the balanced equation can be written as:

\[
2 \text{K} + \text{H}_2\text{SO}_4 \rightarrow \text{K}_2\text{SO}_4 + \text{H}_2
\]

However, note that for every two moles of potassium, one mole of sulfuric acid will yield one mole of potassium sulfate and one mole of hydrogen gas.

So the equation involves:

Reactants: \(2 \text{K}\) and \( \text{H}_2\text{SO}_4 \)
Products: \( \text{K}_2\text{SO}_4 \) and \( \text{H}_2 \)

This provides a full reaction:

\[
2 \text{K} + \text{H}_2\text{SO}_4 \rightarrow \text{K}_2\text{SO}_4 + \text{H}_2
\]