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प्रश्न
The label on the bottle of chemical is spoiled. How will you find whether the chemical is acidic or not?
उत्तर
The chemical is acidic or not checked in two ways:
- By use of litmus paper:
- If the given solution is acidic, it turns blue litmus to red litmus.
- If the given solution is basic, it turns red litmus to blue litmus.
- If the given solution is neutral, there is no effect on litmus paper.
- By use of indicators:
- If the given solution is acidic, it turns methyl orange to red.
- If the given solution is basic, it turns methyl orange to yellow.
- If the given solution is neutral, there is no effect on methyl orange indicator.
संबंधित प्रश्न
A solution turns red litmus blue, its pH is likely to be ______.
Name one natural source of the following acids:
Oxalic acid
What happens when bases react with non-metal oxides? Explain with the help of an example. What does this reaction tell us about the nature of non-metal oxides?
Name an acid used as an eyewash.
Give the name and formula of two : Strong monobasic acids
An aqueous solution turns red litmus solution blue. Excess addition of which of the following solutions would reverse the change?
Paheli is suffering from indigestion due to acidity. Is it advisable to give her orange juice in this situation and why?
Complete the following equation.
ZnO + 2HCl → ______ + ______.
Explain the following:
H3PO3 is not a tribasic acid.
You are supplied with five solutions: A, B, C, D and E with pH values as follows: A = 1.8, B = 7, C = 8.5, D = 13, and E = 5
Classify these solutions as neutral, slightly or strongly acidic and slightly or strongly alkaline.
Which solution would be most likely to liberate hydrogen with powdered zinc metal. Give a word equation for each reaction.
