Grade 11Physical Chemistry
the melting points of sodium chloride is more than that of sodium.why?
2 Answers
Sunil Kumar FP
Sulphur has a melting point (when goes solid to liquid) and boiling point (liquid to gas) higher than room temperature (25 degrees Celcius). Oxygen however has a melting and boiling point below room temperature, and thus exists as a gas.
The difference in boiling points is due to differing forces existing between the two. Stronger forces exist within the sulphur atoms (ie. they are holding the sulphur atoms together more) compared to the forces present within oxygen molecules.
The difference in boiling points is due to differing forces existing between the two. Stronger forces exist within the sulphur atoms (ie. they are holding the sulphur atoms together more) compared to the forces present within oxygen molecules.
Sunil Kumar FP
Sorry wrong answer posted for the above .Here is the right explanation.
Reason-
sodium chloride is аn ionic compound whith crystal lattice,where sodium charged
+ and chlorine - . Energy(in heat form) which is need to melt NaCl is higher
than for Na,as a result of various properties of lattices.
Reason-
sodium chloride is аn ionic compound whith crystal lattice,where sodium charged
+ and chlorine - . Energy(in heat form) which is need to melt NaCl is higher
than for Na,as a result of various properties of lattices.
Other Related Questions on physical chemistry
Which of the following aqueous solutions remains neutral after
electrolysis
Which of the following aqueous solutions remains neutral after
electrolysis
electrolysis
physical chemistry
Last Activity: 3 Years ago
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
physical chemistry
Last Activity: 3 Years ago
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
physical chemistry
Last Activity: 3 Years ago
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
physical chemistry
Last Activity: 4 Years ago