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Which two species will react to form a product containing a coordinate covalent bond? (A) Ca(s) and 2H+(aq)? (B) H2O(l) and H+(aq) (C) Ag+(aq) and Cl-(aq) (D) NH4+(aq) and OH-(aq) - HSC - SSCE Chemistry - Question 16 - 2013 - Paper 1
Question 16
Which two species will react to form a product containing a coordinate covalent bond? (A) Ca(s) and 2H+(aq)? (B) H2O(l) and H+(aq) (C) Ag+(aq) and Cl-(aq) (D) NH4+(a... show full transcript
Worked Solution & Example Answer:Which two species will react to form a product containing a coordinate covalent bond? (A) Ca(s) and 2H+(aq)? (B) H2O(l) and H+(aq) (C) Ag+(aq) and Cl-(aq) (D) NH4+(aq) and OH-(aq) - HSC - SSCE Chemistry - Question 16 - 2013 - Paper 1
Step 1
Which two species will react to form a product containing a coordinate covalent bond?
Answer
A coordinate covalent bond, also known as a dative bond, occurs when one atom provides both electrons for a bonding pair. To determine which pair from the options given forms such a bond, we need to analyze the species involved.
- Option A (Ca(s) and 2H+(aq)): Calcium does not participate in forming coordinate bonds with H+ ions.
- Option B (H2O(l) and H+(aq)): H2O can act as a Lewis base, donating a pair of electrons to H+, but this does not form a coordinate bond.
- Option C (Ag+(aq) and Cl-(aq)): This is a simple ionic bond and does not involve coordinate bonding.
- Option D (NH4+(aq) and OH-(aq)): Here, the NH4+ can donate a pair of electrons to the OH- ion forming water (H2O), making it a coordinate covalent bond.
Thus, the correct answer is (D) NH4+(aq) and OH-(aq).