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प्रश्न
The pH of a salt used to make tasty and crispy pakoras is 14. Identify the salt and write a chemical equation for its formation. List its two uses.
उत्तर
The salt used to make tasty and crispy pakoras are sodium hydrogen bicarbonate. The chemical formula is NaHCO3.
NaCl + H2O + CO2 + NH3 → NH4Cl + NaHCO3
Two of its uses are:
(1) It is used as an antacid in medicine to remove acidity of the stomach.
(ii) It is also used in fire extinguishers.
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संबंधित प्रश्न
What name is given to the common salt which is mined from underground deposits? How was this salt formed?
Complete and balance the following chemical equations:
`NaCl + NH_3 + H_2O +CO_2`→
What happens when a concentrated solution of sodium chloride (brine) is electrolysed? Write the equation of the reaction involved.
Give the names and formulae of any two salts. Also name the acids and bases from which these salt may be obtained.
A salt is dissolved in water and the pH of this salt solution is measured with a universal indicator paper. If the pH of solution is less than 7, the salt is most likely to be:
(a) CH3COONa
(b) Na2CO3
(c) KCl
(d) NH4Cl
P and Q are aqueous solutions of sodium chloride and sodium hydroxide, respectively. Which of these will turn:
(a) blue litmus red?
Define the following term: Hygroscopy.
Answer the following questions below, relating your answers only to salts in the following list:
Sodium chloride, anhydrous calcium chloride, copper sulphate-5-water.
(i) What is the name given to the water in the compound copper sulphate-5-water?
(ii) If copper sulphate-5-water is heated, the water is driven off leaving anhydrous copper sulphate. What is the colour of anhydrous copper sulphate?
(iii) By what means, other than heating, you can dehydrate copper sulphate-5-water and obtain anhydrous copper sulphate?
(iv) Which one of the salts in the given list is deliquescent?
Identify the following substance:
Gas C has an offensive smell like rotten eggs.
A salt that is formed by the complete neutralization of an acid and a base is called ______ salt.
