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Rank the following substances from lowest to highest melting point Please note that ionic substances melt at higher temperatures than metallic substances and metals melt at higher temperatures than m?
Helium Neon Argon Chlorine Naphthalene (C10H8) Iodine Bromine Solid paraffin (C28H58) KCl Solid wax (C20H42) RbBr CsI Brass Quartz Diamond ------- Argon Solid Was (C20H42) Iodine KCI Brass
Why does bromine have a lower melting point than potassium chloride?
Bromine is a molecular compound Br2 and the intermolecular forces are london dispersion forces. Potassium chloride is an ionic compound forming a lattice with strong electrostatic forces holding the lattice together. Less thermal energy is required to shake solid Br2 apart than that required for KCl
What has the largest formula mass LiCl NaCl KCl MgCl2.?
MgCl2 because although K has a higher mass than Mg, the Mg compound with Cl has two atoms of Cl not one.
What is the mole ratio for KCl?
KCl
How is the bonding in kcl different from nh3?
why kcl has less meting point than the nacl
Which has higher melting point KCl or HCI?
Melting points: KCl: 770oC HCl: -114.22oC
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
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)
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
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.
Rank the following substances from lowest to highest melting point Please note that ionic substances melt at higher temperatures than metallic substances and metals melt at higher temperatures than m?
Helium Neon Argon Chlorine Naphthalene (C10H8) Iodine Bromine Solid paraffin (C28H58) KCl Solid wax (C20H42) RbBr CsI Brass Quartz Diamond ------- Argon Solid Was (C20H42) Iodine KCI Brass
Which has the higher limiting molar conductivity-NaCl or KCl And what is the reason?
kcl...more reactive
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.
