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प्रश्न
Answer the following in brief :
What are acids and bases according to Arrhenius theory?
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उत्तर
According to Arrhenius theory, acids and bases are defined as follows:
i. Acid: An acid is a substance that contains hydrogen and gives H+ ions in an aqueous solution.
e.g.
\[\ce{HCl_{(aq)} ->[water]H^+_{ (aq)} + Cl^-_{ (aq)}}\];
\[\ce{CH3COOH_{(aq)}⇌[water] H^+_{ (aq)} + CH3COO^-_{ (aq)}}\]
ii. Base: A base is a substance that contains the OH group and produces hydroxide ions (`"OH"^-` ions) in aqueous solution.
e.g.
\[\ce{NaOH_{(aq)}->[water]Na^+_{ (aq)} + OH^-_{ (aq)}}\];
\[\ce{NH4OH_{(aq)} ⇌[water] NH^+_{ 4(aq)} + OH^-_{ (aq)}}\]
संबंधित प्रश्न
Choose the most correct answer :
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Answer the following in one sentence :
Why cations are Lewis acids?
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\[\ce{HCl + H2O ⇌ H3O\overset{\oplus} + Cl\overset{\ominus}{}}\]
Answer the following in brief :
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The theory which explain amphoteric nature of water is ______.
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| Cl- | |
| `"NH"_4^+` | |
| BCl3 | |
| NH3 |
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Identify the CORRECT statement.
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Identify the conjugate acid-base pair for the following reaction in an aqueous solution.
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\[\ce{NH^+_4 + CO^{2-}_3 ⇌ NH3 + HCO^-_3}\]
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Identify the conjugate acid - base pair in the following reaction.
\[\ce{H2O + HCl -> H3O+ + Cl-}\]
Which of the following species is amphoteric in nature?
Define conjugate acid-base pair.
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Calculate pH of 0.01 M NaOH.
