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प्रश्न
Observe the diagram given below and answer the questions:
- Name the reactants in this reaction.
- Which gas comes out as effervescence in the bigger test tube?
- What is the colour change in the lime water?
- In the above experiment instead of sodium carbonate which chemical can be used to get same products?
- Write the use of acetic acid.
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उत्तर
- The reactants are acetic acid CH3COOH and sodium carbonate Na2CO3.
- The gas produced is carbon dioxide CO2.
- When carbon dioxide gas is passed through lime water, it turns lime water milky or cloudy due to the formation of calcium carbonate. Therefore, the colour change in the limewater would be from clear to milky.
- In the above experiment, instead of sodium carbonate, sodium bicarbonate can be used to get the same products.
- Acetic acid is widely used in the culinary arts as a key ingredient in vinegar. It is also used industrially as a chemical reagent for the production of chemical compounds, in the manufacture of plastics, and in the food industry as a preservative and flavouring agent.
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संबंधित प्रश्न
A student adds a few drops of ethanoic acid to test tubes X, Y and Z containing aqueous solutions of sodium chloride, sodium hydroxide and sodium carbonate, respectively. If he now brings a burning splinter near the mouth of the test tubes immediately after adding ethanoic acid in each one of them, in which of the test tube or test tubes the flame will be extinguished?
(A) X and Y
(B) Y and Z
(C) X and Z
(D) only Z
Choose the correct alternative and rewrite the following:
Acetic acid ..................
When zinc powder is added to acetic acid ______________
(a) the mixture becomes warm
(b) a gas is evolved
(c) the colour of the mixture becomes yellow
(d) a solid settles at the bottom
Write the formula of ethanoic acid.
What is the physical state of CH3COOH?
What happens when ethanoic acid reacts with sodium carbonate? Write chemical equation of the reaction involved.
Give any two uses of ethanoic acid.
Write the IUPAC name of the following:
\[\begin{array}{cc}
\ce{CH3}\\
|\\
\ce{CH3 -C -CH3}\\
|\\
\ce{CH3}
\end{array}\]
Name the functional group present in the following compound:
C2H5CHO
Acetic acid smells like:
(1) a banana
(2) vinegar
(3) an orange
(4) a lemon
Why is Soda lime used not only NaOH?
Write the molecular formulae and structure formula of ethanic acid?
Write balanced euation for the following :
Ethane is burnt in air.
Draw the structural formula of a compound with two carbon atoms in the following case:
An alkane with a carbon to carbon single bond.
Write a balanced chemical equation for the following:
A mixture of sodalime and sodium acetate is heated.
Draw the structural formula for the following:
Ethanoic acid
Why is glacial acetic acid called so?
Give the balanced chemical equation of the following reaction:
Oxidation of ethanol by acidified potassium dichromate.
A spatula full of sodium carbonate is taken in a test tube and 2 mL of dilute ethanoic acid is added to it.
Write a chemical equation for the reaction.
