In 200ml, 0.5molar solution of HNO3, 200ml of 0.1molar NaCl is added. Find molarity of both the solutes
Asked by arup.isro
9th June 2018,
4:03 PM
Answered by Expert
Answer:
There are two conditions for calculating molarity or normality of the solution obtained on mixing two or more solutions:
(a) If the solutions mixed areof the same substance or similar substances:
eg. all acids or all bases
For this condition we cal find molarity by;
(b) If an acid is mixed with a base solution:
First calculate number of gram equivalents present in the given volumes of the solutions. The gram equivalents of the acid or the base in smaller amounts will neutralise equal number of gram equivalents of the other.
Gram equivalents of the excess of acid or base left in the solution in are calculated. These are present in the total volume of solution after mixing.
The no. of gram equivalents of the acid or the base present per litre of the final solution can be calculated.
This gives the normality of the final solution and from this molarity can be calculated.
Answered by Expert
14th June 2018,
1:13 PM
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