neutralization reaction experiment at home

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Neutralization Reaction at Home

Subject: Chemistry

Age range: 11-14

Resource type: Worksheet/Activity

Last updated

18 May 2020

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This activity is a simple experiment that allows students to investigate a neutralization reaction at home using vinegar and baking soda. Suitable for home learning or remote teaching.

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Neutralization is a chemical reaction in which an acid and a base react quantitatively with each other resulting in salts and water as products. The reaction involves combination of H + and OH – ions resulting in formation of water.

Acid + Base (alkaline) → Salt + Water

H 2 SO 4 +2( NaOH) → Na 2 SO 4 + 2(H 2 O)

Sulphuric Acid + Sodium Hydroxide → Sodium Sulfate + Water

H + (aq) + OH – (aq) → H 2 O (l)

Phenolphthalein is an acid/base artificial indicator. It is colorless when it is added to an acid and changes color to pink when added to a base. Lime water is a calcium hydroxide solution, Ca(OH) 2 , which is a base, used in this experiment.

Do-it-yourself Experiment: Neutralization Reaction (Magic Breath)

Apparatus required:.

Precautions:

• Wear the safety glasses and hand gloves while doing the experiment.
• Do not breath-in through the straw as it would allow intake of the solution which can be dangerous.

Step wise Procedure of Neutralization Reaction

• Take 200 ml water in a transparent flask.
• Add 3 ml lime water (solution of calcium hydroxide) into water to make it a base.

CO 2  + H 2 O → H 2 CO 3 (carbonic acid)

H 2 CO 3  + Ca(OH) 2  → CaCO 3  + H 2 O

Applications of Neutralization Reaction:

• Treatment of Waste Water: The waste water from the industries is often toxic in nature and very harmful to the environment. This toxicity of the waste water needs to be neutralized with different chemicals like magnesium hydroxide, calcium carbonate, sodium bicarbonate, etc. depending on the applications.
• Human Digestive System: The intestinal wall absorbs the nutrients with the help of alkaline environments. So, antacid bicarbonates are produced by the pancreas to cause this transformation to happen.
• Control of pH value of Soil: Neutralization of soil is necessary to promote the plant growth. Soil gets acidic nature due to acid rains. Liming process is employed in agriculture that uses calcium and magnesium carbonates to neutralize the soil and hence providing nutrients to promote the plant growth. Soil is also alkaline in some cases where calcium sulfate, gypsum and sulfur etc are used for neutralization.

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Experiment Neutralization Reactions Experiments​

Neutralization reactions.

Experiment #6 from Physical Science with Vernier

Introduction

If an acid is added to a base, a chemical reaction called neutralization occurs. An example is the reaction between nitric acid, HNO 3 , and the base potassium hydroxide, KOH.

Neutralization produces a salt and water. KNO 3 is the salt in the above reaction. Heat energy is generally released, and the amount of heat released depends upon the properties of the acid and the base. Temperature measurements, made with a Temperature Probe, can be used to study the heat effects of neutralization.

In this experiment, you will

• Use conductivity to determine the strengths of acids and bases.
• Use litmus paper to distinguish acids and bases.
• Measure temperatures of reactants and products of neutralization reactions.
• Study the relationship between acid and base strength and heat released during neutralization.

Sensors and Equipment

This experiment features the following sensors and equipment. Additional equipment may be required.

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Purchase the Lab Book

This experiment is #6 of Physical Science with Vernier . The experiment in the book includes student instructions as well as instructor information for set up, helpful hints, and sample graphs and data.