The best and most correct answer among the choices provided by the question is the second choice , b. sodium hydroxide .
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If the total mass of the reactants is 49g then the mass of the products also equals 49g.
It is due to the law of conservation of mass.
Mass can neither be created nor be destroyed.
Crust, Mantel, Outercore, Innercore
Answer:
H+(aq) + OH-(aq) ⟶H2O(l)
Explanation:
Step 1: The balanced equation
HCN(aq) + KOH(aq) ⟶ H2O (l) + KCN (aq)
H+(aq) + CN-(aq) + K+(aq) + OH-(aq) ⟶H2O(l) + K+(aq) + CN-(aq)
Step 2: The net ionic equation
The net ionic equation, for which spectator ions are omitted - remember that spectator ions are those ions located on both sides of the equation - will , after canceling those spectator ions in both side, look like this:
H+(aq) + OH-(aq) ⟶H2O(l)
