Question
Mrs. Rushing fills a balloon with hydrogen gas to demonstrate its ability to burn. Which combination could she use to produce the hydrogen she needs?
NaOH and oil
Zn and KOH
H2SO4 and CaCO3
Mg and HCl
NaOH and oil
Zn and KOH
H2SO4 and CaCO3
Mg and HCl
Answers
GPT-4o mini
To produce hydrogen gas, Mrs. Rushing can use the following combination:
**Mg and HCl**
When magnesium (Mg) reacts with hydrochloric acid (HCl), it produces hydrogen gas (H2) as a byproduct. The reaction can be represented by the equation:
\[ Mg + 2HCl \rightarrow MgCl_2 + H_2 \uparrow \]
The other combinations either do not produce hydrogen gas or do not involve a suitable reactant for hydrogen production.
**Mg and HCl**
When magnesium (Mg) reacts with hydrochloric acid (HCl), it produces hydrogen gas (H2) as a byproduct. The reaction can be represented by the equation:
\[ Mg + 2HCl \rightarrow MgCl_2 + H_2 \uparrow \]
The other combinations either do not produce hydrogen gas or do not involve a suitable reactant for hydrogen production.