---
title: "Preparing a gas and collecting it over water Template | MolDraw"
url: https://www.moldraw.com/templates/setup-gas-preparation/
description: "Preparing a gas and collecting it over water template: Conical flask with a thistle funnel and delivery tube through a two-hole bung, gas collected in an…"
lang: en
publisher: Scidart Academy
generated: 2026-10-28
---
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# Preparing a gas and collecting it over water template

![Preparing a gas and collecting it over water template: Conical flask with a thistle funnel and delivery tube through a two-hole bung, gas collected in an inverted gas jar over a beehive shelf in a pneumatic trough.](https://www.moldraw.com/templates/setup-gas-preparation.webp)

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Conical flask with a thistle funnel and delivery tube through a two-hole bung, gas collected in an inverted gas jar over a beehive shelf in a pneumatic trough.

## What the template shows

- For gases that are only sparingly soluble in water, e.g. H₂, O₂, N₂, CH₄
- Thistle funnel
- Add the acid here; the stem tip stays below the liquid so gas cannot escape
- Two-hole bung
- Zinc + dilute HCl gives H₂ (no flames nearby); H₂O₂ with MnO₂ catalyst gives O₂
- Delivery tube
- Filled with water and inverted; the gas pushes the water out. Discard the first jar (air)
- Beehive shelf
- Tube enters at the side; gas rises through the hole
- Pneumatic trough
- Water; only gases that dissolve little can be collected this way
- Reaction setup

Drawn with 17 shapes – every one editable in MolDraw.

## Sources

- [Housecroft & Sharpe, Inorganic Chemistry, 5th ed., Pearson 2018](https://openlibrary.org/isbn/9781292134147) Textbook

## How to use this template

1. Press **Edit in MolDraw**. The template opens on the canvas of the free MolDraw editor.
2. Change anything: move structures, edit atoms and labels, recolour highlights or delete what you do not need.
3. Add your own structures, arrows and text next to it, or combine several templates on one page.
4. Export the drawing as PNG, SVG or PDF for slides, worksheets, theses and papers.

## Frequently asked questions

### Is the Preparing a gas and collecting it over water template free?

You can preview the Preparing a gas and collecting it over water template here and open and edit it in MolDraw for free. Downloading or exporting it is part of MolDraw Pro, together with the other premium templates.

### Can I edit the Preparing a gas and collecting it over water template?

Yes. It opens as an ordinary MolDraw drawing, so every structure, arrow, label and colour can be changed, and you can add your own content around it.

### Is the chemistry checked?

Every structure is checked with RDKit and every curly arrow passes MolDraw’s electron-flow audit. The sources used are listed on this page.

### Can I edit the glassware?

Yes. Every piece of glassware is a MolDraw apparatus object: move, resize, recolour the liquid or swap a piece and the joints stay connected.

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