Consider the ions of potassium (K) and sulfur (S), Write chemical formulas for all possible ionic compounds involving these ions
2 answers:
The compounds between the ions and
are
An ionic compound is a compound that is composed of ions. Let us note that ionic compounds are always such that the sum of the charges on the ions is zero.
You need two potassium atoms to form an ionic bond with one sulfur atom. Potassium ions are formed by donating and losing their electrons in the outermost shell, the lost electrons are gained by sulphur atom to form and
, respectively.
The attraction between the positive ions and negative ions gives rise to the ionic bond and the molecular formula is
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<u>Answer:</u> The experimental van't Hoff factor is 1.21
<u>Explanation:</u>
The expression for the depression in freezing point is given as:
where,
i = van't Hoff factor = ?
= depression in freezing point = 0.225°C
= Cryoscopic constant = 1.86°C/m
m = molality of the solution = 0.100 m
Putting values in above equation, we get:
Hence, the experimental van't Hoff factor is 1.21