Which of the following substances is the most soluble in water?
2 answers:
Answer: A. Sodium chloride
Explanation: Sodium chloride ( is an ionic compound formed by transfer of electrons from sodium to chlorine.
Electronic configuration of sodium:
Sodium atom will loose one electron to gain noble gas configuration and form sodium cation with +1 charge.
Electronic configuration of chlorine:
Chlorine atom will gain one electron to gain noble gas configuration and form chloride ion with -1 charge.
These ions can be separated in polar solvent water and thus are soluble in water.
Whereas methane ( is a covalent compound formed by sharing of electrons and is soluble in non polar solvents.
Bromine is a covalent compound formed by sharing of electrons and is soluble in non polar solvents.
You might be interested in
Answer:
C.
Explanation:
Specific heat capacity of a substance can be defined as the amount of heat a gram of the substance must lose or absorb in order to change its temperature by a degree Celsius. It is measured in Joules per kilogram per degree Celsius (J/kg°C).
Generally, the specific heat capacity of water is 4.182J/kg°C and is the highest among liquids.
Heat capacity or quantity of heat is given by the formula;
Where;
Q represents the heat capacity or quantity of heat.
m represents the mass of an object.
c represents the specific heat capacity of the substance.
dt represents the change in temperature.
Hence in calculating the relationship between the amount of heat added to a substance and the corresponding temperature change, the specific heat capacity is usually represented by the symbol C.