Advertisements
Advertisements
प्रश्न
Describe how sodium hydrogencarbonate (baking soda) is produced on a large scale. Write equation of the reaction involved.
उत्तर
Sodium hydrogencarbonate (baking soda) is produced on a large scale by reacting a cold and concentrated solution of sodium chloride called brine with ammonia and carbon dioxide.
NaCl + NH3 + H2O + CO2 → NaHCO3 + NH4Cl
APPEARS IN
संबंधित प्रश्न
When you add sodium hydrogen carbonate to acetic acid in a test tube, a gas liberates immediately with brisk effervescence. Name this gas. Describe the method of testing this gas.
A student takes about 2 mL ethanoic acid in a dry test tube and adds a pinch of sodium hydrogen carbonate to it. He reports the following observations:
I. Immediately a colourless and odourless gas evolves with a brisk effervescence.
II. The gas turns lime water milky when passed through it.
III. The gas burns with an explosion when a burning splinter is brought near it.
IV. The gas extinguishes the burning splinter that is brought near it.
The correct observations are
(A) I, II and III
(B) II, III and IV
(C) III, IV and I
(D) I, II and IV
What will happen if a solution of sodium hydrocarbonate is heated? Give the equation of the reaction involved.
Give two important uses of baking soda.
Explain the action of baking powder in the making of cake (or bread). Write equation of the reaction involved.
The formula of baking soda is:
(a) K2CO3
(b) KHCO3
(c) NaHCO3
(d) Na2CO3
The chemical name of baking soda is ______.
Salt 'P', commonly used in bakery products, on heating gets converted into another salt 'Q' which itself is used for the removal of hardness of water and a gas 'R' is evolved. The gas 'R', when passed through freshly prepared lime water, turns milky. Identify 'P', 'Q' and 'R', giving a chemical equation for the justification of your answer.
NaHCO, formed by reaction of ____________.
Mild non-corrosive basic salt is ______.
