हिंदी

Explain by writing a word equation. Bubbles are seen on adding lemon juice to baking soda.

Advertisements
Advertisements

प्रश्न

Explain by writing a word equation.

Bubbles are seen on adding lemon juice to baking soda.

स्पष्ट कीजिए
Advertisements

उत्तर

Bubbles are seen on adding lemon juice to baking soda because lemon juice is citric acid and baking soda is sodium bicarbonate. On adding lemon juice in baking soda, we add acid in the base then neutralization reaction is taking place resulting in the formation of salt, water and brisk effervescence of carbon-dioxide. This CO2 is released in the form of bubbles.

H2C6H5O7(aq) + 3NaHCO3(aq) → Na3C6H5O7(aq) + 3H2O(l) + 3CO2(g)

citric acid + baking soda → salt + water + carbon dioxide

Bubbles are seen on adding lemon juice to baking soda.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 13: Chemical Change and Chemical Bond - Exercise [पृष्ठ ९४]

APPEARS IN

बालभारती General Science [English] Standard 8 Maharashtra State Board
अध्याय 13 Chemical Change and Chemical Bond
Exercise | Q 2.4 | पृष्ठ ९४
बालभारती General Science Integrated [English] Standard 8 Maharashtra State Board
अध्याय 13 Chemical Change and Chemical Bond
Exercises | Q 2. d. | पृष्ठ ९०

संबंधित प्रश्न

When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain.


Define precipitation reaction.


Give reason.

Acidic soil is treated with quick lime.


Name the type of chemical reaction shown by the following equation:

Fe + CuSO4 → FeSO4 + Cu


Name the type of chemical reaction shown by the following equation:

NaOH + HCl → NaCl + H2O


What is a chemical reaction?


Give examples of exothermic reactions i.e. heat evolved in each of the following:

(a) reaction between a solid and a liquid
(b) reaction between two gases
Give two examples of exothermic reactions seen in everyday life.


On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.

A coloured substance which leaves a black residue and evolves two gases one of which is acidic and coloured and the other neutral and colourless.


State the following reaction represent oxidation or reduction.

\[\ce{Al->Al+++}\]


Arrange the following statements in correct sequence:

  1. One side is water-loving and other water-hating molecules.
  2. When you agitate the cloth, the dirt is surrounded by many molecules and taken away from the cloth.
  3. The dirt surrounded by the detergent molecules floats in the water making it dirty.
  4. Finally, the cloth is clean.
  5. The detergent molecules have two sides.
  6. Water hating goes and joins with dirt and oil in the cloth while the water-loving joins with the water molecules.

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×