Chemistry
Grade-11
Easy
Question
A substance that can donate the OH- ion -
- Base
- Acid
- Amphoteric
- None of these
The correct answer is: Base
Bases are the substances (or species) that dissociate (or break) in water to give hydroxide ions (aq).
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Assertion: C2H5OH is as an Arrhenius base.
Reason: C22H5OH donates its OH- in aqueous solutions.
Assertion: C2H5OH is as an Arrhenius base.
Reason: C22H5OH donates its OH- in aqueous solutions.
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Assertion: HCl is an Arrhenius acid.
Reason: HCl will yield hydronium ions as the only positive ions in the solution.
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Reason: HCl will yield hydronium ions as the only positive ions in the solution.
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Which of the following statement is the limitation of Arrhenius concept?
Which of the following statement is the limitation of Arrhenius concept?
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Which of the following statements is false regarding Arrhenius concept?
Which of the following statements is false regarding Arrhenius concept?
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Which of the following reactions shows the formation of hydronium ions?
Which of the following reactions shows the formation of hydronium ions?
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According to Arrhenius concept, the weak acid from the following option is -
According to Arrhenius concept, the weak acid from the following option is -
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In chemical equilibrium -
In chemical equilibrium -
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A proton, H+, is highly reactive. In an aqueous solution, it cannot exist freely. Therefore, it combines with the oxygen atom of a water molecule (solvent). Determine the shape of the resultant molecule.
A proton, H+, is highly reactive. In an aqueous solution, it cannot exist freely. Therefore, it combines with the oxygen atom of a water molecule (solvent). Determine the shape of the resultant molecule.
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Complete the following reaction: -
Mg(OH)2 (aq) → Mg2+ (aq) + ____(aq)
Complete the following reaction: -
Mg(OH)2 (aq) → Mg2+ (aq) + ____(aq)
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Observe the diagram and identify the substance -
Observe the diagram and identify the substance -
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Choose the correct reaction from the following regarding Arrhenius acid and base:-
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Consider the following species: HF, HCl, HBr, and HI. Arrange them in order of increasing acid strength.
Consider the following species: HF, HCl, HBr, and HI. Arrange them in order of increasing acid strength.
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Match the following:
| A. Acids | (i) Unstable |
| B. Bases | (ii) Trigonal pyramidal |
| C. H+ ion | (iii) Release H+ ion |
| D. H3O+ | (iv) Release OH- ion |
Match the following:
| A. Acids | (i) Unstable |
| B. Bases | (ii) Trigonal pyramidal |
| C. H+ ion | (iii) Release H+ ion |
| D. H3O+ | (iv) Release OH- ion |
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Observe the given diagram below:
Consider the following species: ethanoic acid, potassium chloride, and ethanol. Arrange them in order of increasing conductivity.
Observe the given diagram below:
Consider the following species: ethanoic acid, potassium chloride, and ethanol. Arrange them in order of increasing conductivity.
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Observe the given diagram below:
Acetic acid is a weak electrolyte that has low conductivity due to -
Observe the given diagram below:
Acetic acid is a weak electrolyte that has low conductivity due to -
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