Grade 12Physical Chemistry
11.1g. of CaCl2 is present in 100ml of the aqueous solution. The chloride ion concentration is
11.1g. of CaCl2 is present in 100ml of the aqueous solution. The chloride ion concentration is
2 Answers
aparazita sharma
Si
aparazita sharma
since in ques we have 11.1 g cacl2 we will first calculate no of moles corresponding to 11.1 g ehich is equal to 0.1 mole as no of moles = given mass/ molar mass
and molar mass = 40+2*35.5 =111g
so no of moles = 11.1 / 111 = 0.1 mole
now as CaCl2 is in aq medium it will dissociate as
CaCl2 (aq) gives Ca2+(aq) + 2 Cl-(aq)
now since 1 mole is giving 2 mole cl- therefore 0.1 mole cacl2 will give 0.2 mole cl- ion . We can calculate concentration as Molarity = no of moles / vol of solution in L therefore conc of cl- ion will be 0.2 / 0.1 = 2M (as 100 ml = 0.1 L) (100 / 1000)
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