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1 M HCL Preparation

This document provides a step-by-step guide to prepare a 1 M hydrochloric acid (HCl) solution from concentrated HCl. It includes required materials, calculations for dilution, and a detailed preparation procedure emphasizing safety precautions. The document also offers assistance for preparing different volumes of the solution upon request.

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sultanaafridi313
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199 views2 pages

1 M HCL Preparation

This document provides a step-by-step guide to prepare a 1 M hydrochloric acid (HCl) solution from concentrated HCl. It includes required materials, calculations for dilution, and a detailed preparation procedure emphasizing safety precautions. The document also offers assistance for preparing different volumes of the solution upon request.

Uploaded by

sultanaafridi313
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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To prepare 1 M hydrochloric acid (HCl) solution, Ulfat, here is the complete guide.

It’s a
bit different from NaOH because HCl is a concentrated liquid acid, not solid.

🧪 Required Materials:

 Concentrated HCl (usually ~37% w/w, density ≈ 1.18 g/mL)


 Distilled water
 Volumetric flask (1 L)
 Beaker
 Measuring cylinder or pipette
 Glass rod or magnetic stirrer
 Gloves, lab coat, goggles

⚖️Calculation:

We must dilute concentrated HCl to get 1 M solution.

🧠 Step-by-step:

1. Molar mass of HCl = 36.46 g/mol


2. Concentrated HCl (~37%) contains about 12 M HCl.
3. Use the dilution formula:

M_1V_1 = M_2V_2

Where:

 (concentrated HCl)
 (volume to take)
 (desired)

V_1 = \frac{M_2 \times V_2}{M_1} = \frac{1 \times 1000}{12} \approx 83.3 \,


\text{mL}

✅ Take 83.3 mL of concentrated HCl and dilute to 1 liter with distilled water.

⚗️Preparation Procedure:

1. In a fume hood, pour about 500 mL of distilled water into a 1 L


beaker or volumetric flask.
2. Carefully measure 83.3 mL of concentrated HCl using a
graduated cylinder.
3. Slowly add the HCl to the water with constant stirring.
❗ Never add water to acid — always acid to water! (prevents violent
splashing)
4. After mixing, transfer the solution to a 1-liter volumetric flask.
5. Rinse the beaker and cylinder with distilled water and pour into
flask.
6. Add more distilled water to make the final volume exactly 1000
mL.
7. Mix thoroughly.

🧤 Safety Tips:

 HCl fumes are corrosive — use a fume hood.


 Always wear gloves, goggles, and lab coat.
 If it spills, neutralize with baking soda solution or rinse with water.

Let me know if you want to prepare 100 mL, 250 mL, or any other volume — I’ll calculate
it for you!

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