Ice has a lower density than the density of water.
Chemical
reaction: HCN(aq) + H₂O(l) ⇄ CN⁻(aq) + H₃O⁺(aq)<span>.
</span>Ka = [CN⁻] · [H₃O⁺] / [HCN].
[HCN] is equilibrium concentration of hydrocyanic acid.
hydrocyanic acid is weakly acidic and <span>partially </span>ionizes<span> in water solution and give the </span>cyanide anion (CN⁻).
The salts<span> of the cyanide anion are called cyanides.</span>
Answer:
7
Explanation:
The pH of water is 7.
pH is the convenient scale for expressing the level of acidity or alkalinity of aqueous solutions.
An acidic solution has a pH value less than 7.
As pH decreases, the acidity of solutions increases.
Neutral solutions have a pH of 7.
An alkaline solutions has a pH greater than 7 and the level of alkalinity increases as the pH increases.
Water has a pH of 7 because the concentration of hydrogen and hydroxyl ion is equal.
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2Ag +(aq) + SO4 2-(aq)----->Ag2SO4 (s)
