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प्रश्न
Define an acid.
उत्तर
An acid is defined as a compound which when dissolved in water produces hydronium ion (H3O+), the only positively charged ion and a negative ion. At first the acid furnishes hydrogen ion (H+) in aqueous solution but this H+ ion combines with a water molecule to form Hydronium ion.
For example : acetic acid, sulphuric acid, nitric acid.
CH3COOH + H2O → H3O+ + CH3COO-
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संबंधित प्रश्न
What happens to temperature of the solution, when an acid is neutralised?
What effect does the concentration of H+ (aq) ions have on the nature of a solution?
Consider the following substances:
NaCl, Ca(OH)2, NaHCO3, NH3, Na2CO3, H2O, Cl2, CO2, CaSO4.2H2O, 2CaSO4.H2O, CaOCl2
Which compound is used as an antacid?
State one observation for each of the following :
A small piece of zinc is added to dilute hydrochloric acid
Name the positive ion formed When an acid is dissolved in water.
Fill in the missing data in the following table
| Name of the salt | Formula | Salt obtained from | ||
| Base | Acid | |||
| (i) | Ammonium chloride | NH4Cl | NH4OH | ______ |
| (ii) | Copper sulphate | ______ | ______ | H2SO4 |
| (iii) | Sodium chloride | NaCl | NaOH | ______ |
| (iv) | Magnesium nitrate | Mg(NO3)2 | ______ | HNO3 |
| (v) | Potassium sulphate | K2SO4 | ______ | ______ |
| (vi) |
Calcium nitrate | Ca(NO3)2 | Ca(OH)2 | ______ |
Which of the following metal does not react with sodium hydroxides?
Which one of the following will not produce acid with water?
Draw the structure of Hydronium ion.
Name the acid present in lemon.
