NaCl IS READILY SOLUBLE IN WATER DUE TO HIGH HYDRATION ENERGY
BUT HAVE HIGH MELTING POINT DUE TO STRONG ELECTROSTATIC FORCE BETWEEN SODIUM AND CHLORIDE IONS.
Explanation:
Sodium has low melting point 98 deg celcius. In water sodium gets floated.
But sodium chloride have a high melting point because lattice is constructed due to strong electro-static force between positive sodium ions and negative chloride ions as they attract each other. This leads to strong construction so, NaCl have high temperature to break the bonds between the ions.
The melting temperature depends on the charge of the ions. Due to high hydration energy the sodium ions are readily soluble in water. Water can dissolve salt because the positive part of water molecules attracts negative chloride ions and negative part of water molecules attracts positive sodium ions.
Solar Energy is the answer
Answer:
A table was attached to the question
Explanation:
The step by step calculation is as shown
Answer:
For a volume of 1 liter, we have a total mass of 220 grams of CaCl2 ( Option A)
Explanation:
<u>Step 1: </u>Given data
The concentration of the solution we want to make is 2M
2M = 2 moles/ L So the volume = 1L
The molar mass of CaCl2 is = 40 + 2*35 = 110g/mole
<u>Step 2:</u> Calculate number of moles
If we consider the volume = 1 L then for a concentration of 2M, this means the number of moles is 2
<u>Step 3:</u> Calculate mass
The molar mass of CaCl2 = 110 g/mole
This means 110 grams per 1 mole
for 2 moles the mass is 220 grams
This means that for a volume of 1 liter, we have a total mass of 220 grams of CaCl2