1. Calculate the mass of sulfuric acid which is required to produce 400mL solution of it with concentration of 0.2M.
Answers
Answered by
2
Explanation:
Total volume of the solution =500 ml+400 ml=900 ml=0.9 L.
The number of moles of hydrogen ions present in 500 ml of 1 M H
2
SO
4
solution is 2×1×
1000
500
=1 mole.
The number of moles of hydrogen ions present in 400 ml of 2.5 M HCl solution is 2.5×
1000
400
=1 mole.
Thus, total number of moles of hydrogen ions present in the final solution is 1+1=2 moles.
Hence, [H
+
]=
0.9
2
=2.22 M.
Therefore, option (A) is correct.
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