Which salt is least soluble in water at 20c
1 answer:
Answer - Potassium chlorate
Explanation-
Composition of oxygen potassium and chlorine makes a salt named potassium chlorate. It finds its use in many areas like disinfectant oxidizing agents explosives etc.
or potassium Chlorate has a low solubility in water hence among all other salts at 20 degree centigrade this one has the least chances of dissolving in it.
Since increase in temperatures are responsible for increase in solubility of many others it also happens with but compared to others even increase temperature solubility is lesser from others.
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The mass of I₂ that contains 2.57×10²⁵ molecules is 10843.52 g
From a detailed understanding of Avogadro's hypothesis, we understood 1 mole of any substance contains 6.02×10²³ molecules. This implies that 1 mole of I₂ also 6.02×10²³ molecules i.e
<h3>6.02×10²³ molecules = 1 mole of I₂</h3>Recall:
1 mole of I₂ = 2 × 127 = 254 g
Thus,
<h3>6.02×10²³ molecules = 254 g of I₂</h3>With the above information, we can obtain the mass of I₂ that contains 2.57×10²⁵ molecules. This is illustrated below:
6.02×10²³ molecules = 254 g of I₂
Therefore,
2.57×10²⁵ molecules =
Thus, the mass of I₂ that contains 2.57×10²⁵ molecules is 10843.52 g
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