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Melting points:
KCl: 770oC
HCl: -114.22oC
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∙ 10y ago
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Why the melting point of potassium fluoride is higher than the melting point of potassium iodide?
KF has small size than KCl. So the packing of atoms / ions in KF is more than that in KCl. So a larger energy is needed to separate the atoms from solid state to liquid state and hence KF has higher melting point than KCl.
Does KCl have a higher boiling point than CO2?
KCl is an ionic substance (strong intermolecular forces) and CO2 is a non-polar covalent substance (weak intermolecular forces)
How can you check the purity of Kcl?
If you melt the HCl, and it melts at the proper melting point for HCl, then it is a pure substance. If not, it has been mixed with something else, which has altered the purity of the HCl.
Which has the higher limiting molar conductivity-NaCl or KCl And what is the reason?
kcl...more reactive
What is the melting point of KCL?
K2CO3 is the molecular formula for potassium carbonate. K2CO3 has a melting point of 1164 degrees Kelvin and is 138.21 grams per mole.
Why the melting point of potassium fluoride is higher than the melting point of potassium iodide?
KF has small size than KCl. So the packing of atoms / ions in KF is more than that in KCl. So a larger energy is needed to separate the atoms from solid state to liquid state and hence KF has higher melting point than KCl.
What is the balanced equation for heating potassium chloride?
There is no reaction (decomposition) when KCl is heated, other than the melting of KCl, above its melting point.
Why KCl or KF is added in the electrolysis of molten NaCl?
To decrease melting point of NaCl
Can potassium chloride andsodium chloride be separated by sublimation?
No, because neither of them sublimate at 760 torr (1 atm). They melt. You could separate them by melting point, as NaCl has a melting point of 801ºC, but KCl has a melting point of 770ºC.
What is Iodine solid wax brass argon KCl ranked from lowest melting point to highest?
1. Argon 2. Solid Wax (C20H42) 3. Iodine 4. KCl 5. Brass
Why does 0.300 M KCl have a higher boiling point that 0.500 M glucose?
KCl is an ionic compound and glucose is a molecular compound. Ionic compounds have higher boiling points than molecular compounds.
Does KCl have a higher boiling point than CO2?
KCl is an ionic substance (strong intermolecular forces) and CO2 is a non-polar covalent substance (weak intermolecular forces)
How can you check the purity of Kcl?
If you melt the HCl, and it melts at the proper melting point for HCl, then it is a pure substance. If not, it has been mixed with something else, which has altered the purity of the HCl.
Which has the higher limiting molar conductivity-NaCl or KCl And what is the reason?
kcl...more reactive
What is the melting point of KCL?
K2CO3 is the molecular formula for potassium carbonate. K2CO3 has a melting point of 1164 degrees Kelvin and is 138.21 grams per mole.
Are there chemical agents lighter than air?
Snow salt (KCl) mixed with water is NOT an example of a chemical reaction at all. NOT endothermic and NOT exothermic. WHY? A chemical reaction occurs when the chemicals you start with are different from the ones you end up with: not a state change, but an identity change. After the KCl and water are mixed, you still have KCl and water. This is NOT a chemical reaction. Why does the temperature decrease? FREEZING POINT DEPRESSION and melting point elevation often occur when substances are mixed. In the situation described by the other respondent, the water immediately got colder when KCl was added. This is because the water was at its freezing/ melting point, in a cold room; when the water gets cold enough, it will all crystallize into a solid - frozen - crystalline matrix. BUT when the KCl (or salt, or any of a variety of substances) is added, this interferes with the crystallization process, so that more heat energy must be lost in order for the molecules to lock into their crystalline matrix. THEREFORE in that particular situation, the water was first mostly frozen with some liquid areas remaining at a low temperature...then KCl was added, and the crystals were broken apart, more able to release heat/ vibrate until a new freezing point, colder than before, is reached. Research freezing point depression for more information.
Why does NaCl have a high melting point than KCl?
This can be rationalised by looking at the lattice energy. Using Madelungs method the smaller Na+ ion causes a stronger coulombic attraction making it harder to beak up the lattice and increasing the mp.
