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Q1. Which of the following acids is diprotic?
Solution:
H2SO4 (sulfuric acid) is a diprotic acid, meaning it can donate two protons (H+ ions) in solution.
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Q2. Which of the following is a Lewis acid?
Solution:
BF3 (boron trifluoride) is a Lewis acid because it can accept an electron pair.
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Q3. Which of the following compounds is a salt?
Solution:
NaCl (sodium chloride) is a salt formed from the neutralization of an acid (HCl) and a base (NaOH).
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Q4. What is the primary role of a buffer solution?
Solution:
A buffer solution maintains a stable pH when small amounts of acid or base are added.
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Q5. What is the primary role of a base in a neutralization reaction?
Solution:
In a neutralization reaction, a base acts as a proton acceptor, reacting with an acid to form water and a salt.
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Q6. What is the conjugate base of H2SO4?
Solution:
The conjugate base of H2SO4 is HSO4-, formed when H2SO4 donates a proton (H+).
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Q7. What is the effect of increasing the concentration of an acid on its pH?
Solution:
Increasing the concentration of an acid decreases its pH, as pH is inversely related to the concentration of H+ ions.
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Q8. Which of the following is a characteristic of a strong base?
Solution:
Strong bases, like NaOH, have a high pH and completely dissociate in water, leading to high conductivity.
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Q9. What is the primary product of the reaction between NaOH and HCl?
Solution:
The reaction between NaOH and HCl produces NaCl (sodium chloride) and H2O (water) as products.
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