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प्रश्न
Define Acid.
Define the following term:
Acid
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उत्तर
An acid is a compound which when dissolved in water produces hydronium ion(H3O+), the only positively charged
ion and a negative ion.
संबंधित प्रश्न
When a solution is added to a cloth strip treated with onion extract, then the smell of onion cannot be detected. State whether the given solution contains an acid or a base.\
Give the names and formulae of two strong acids and two weak acids.
Name one animal and one plant whose stings contain formic acid (or methanoic acid).
Which chemical is injected into the skin of a person during an ant's sting?
How can the effect of these stings be neutralised?
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?
Bee stings can be treated with:
(a) vinegar
(b) sodium hydrogencarbonate
(c) potassium hydroxide
(d) lemon juice
What type of ions is formed:
when a base (or alkali) is dissolved in water?
Give two examples of the following:
hydracids
Give the appropriate term defined by the statements given below :
The substance that releases hydronium ion as the only positive ion when dissolved in water.
Carbonic acid gives an acid salt but hydrochloric acid does not. Explain.
Choosing the correct words given in brackets, complete the sentence given below:
A(n) ______ (acid/basic) salt is one in which the hydrogen of an acid has been partially replaced by a ______ (metal/non-metal).
Answer the following question.
Identify the acid and the base from which sodium chloride is obtained. Which type of salt is it? When is it called rock salt? How is rock salt formed?
Most of the acids are not soluble in water.
State whether the following statement is true or false. Correct the false statement.
Lemon water is basic in nature.
A farmer was unhappy because of his low crop yield. He discussed the problem with an agricultural scientist and realised that the soil of his field was either too acidic or too basic. What remedy would you suggest the farmer to neutralise the soil?
Which of the following metal does not react with sodium hydroxides?
Complete the following equation.
Mg+ ______ → ______ + H2.
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.
Draw the structure of Hydronium ion.
