Advertisements
Advertisements
प्रश्न
A gas is liberated immediately with a brisk effervescence, when you add acetic acid to sodium hydrogen carbonate powder in a test tube. Name the gas and describe the test that confirms the identity of the gas.
उत्तर
When acetic acid (CH3COOH) is added to the sodium hydrogen carbonate (NaHCO3) powder in a test tube, then the products obtained are sodium acetate, carbon dioxide and water.
Observations in this reaction are:
Brisk effervescence is seen because of CO2 gas escaping out from the reaction mixture. The gas turns lime water milky that confirms the identity of CO2 gas.
Chemical reactions involved:
CH3COOH + NaHCO3 →CH3COONa + CO2↑ + H2O
Ca(OH)2 + CO2 → CaCO3↓ + H2O
APPEARS IN
संबंधित प्रश्न
How esters are prepared ?
Complete the following chemical equations : C2H5OH + Na →
Name the following:
The distinctive reaction that takes place when ethanol is treated with acetic acid.
Write the names of three compounds which can be oxidised directly or in stages to produce acetic acid.
If you take a pinch of sodium hydrogen carbonate powder in a test-tube and add drop-by-drop acetic acid to it, what would you observe immediately? List any two main observations.
Draw the structural formula of a compound with two carbon atoms in the following case:
An alcohol containing two carbon atoms.
A compound X when treated with an organic acid Y (having vinegar-like smell) in the presence of the acid Z, forms a compound P which has a fruity smell.
- Identify X, Y, and Z
- Write the structural formula of X and Y.
- What type of compound P is?
- Name the above reaction.
- If compound X and Y both have 2 carbon atoms. Write the reaction.
Write the answers to the questions by observing the following figure.
- Write the chemical reaction shown in the figure above in the form of a balanced equation.
- Write the name of the gas coming out of the large test tube in the above chemical reaction.
- Why do small bubbles appear in the small test tube?
- What is the change in colour of lime water?
Mineral acids are stronger acids than carboxylic acids because
- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
Ethanoic acid reacts with the basic salt, sodium carbonate, to form a salt, named ______, water and carbon dioxide gas.
