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प्रश्न
Water is never added to acid in order to dilute it why?
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उत्तर
If water is added to a concentrated acid, the heat generated causes the mixture to splash out and cause severe burns, as it is an exothermic process. Thus, water is never added to acid to dilute it.
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संबंधित प्रश्न
Nitric acid turns red litmus blue.
Name an indicator which is pink in alkaline solution but turns colourless in acidic solution.
Write any two important uses of bases.
Define the term ‘basicity’ of an acid.
Name an acid used as an eyewash.
Write the chemical name from the given formula.
H2SO4
Which of the following statements is true for acids?
Match the substances in Column I with those in Column II.
| Column 1 | Column II | ||
| (a) | Tartaric acid | (i) | soap |
| (b) | Calcium hydroxide | (ii) | curd |
| (c) | Formic acid | (iii) | unripe mangoes |
| (d) | Sodium hydroxide | (iv) | ant’s sting |
| (e) | Lactic acid | (v) | lime water |
Name the acid present in lemon.
Consider the acidity of the carboxylic acids:
(1) PhCOOH
(2) o-NO2C6H4COOH
(3) p-NO2C6H4COOH
(4) m-NO2C6H4COOH
