Which of the following has the highest concentration of h+ ions? a. 0.001 m hcl b. 0.01 m hcl c. 10 m hcl d. 0.1 m hcl
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Ответ:
Answer : The correct option is, (C) 10 M HCl
Explanation :
When 1 mole of HCl dissociates then it gives 1 mole of hydrogen ion
and 1 mole of chloride ion 
.
The balanced chemical reaction is,
(A) 0.001 M HCl
0.001 M concentration means, 0.001 moles present in 1 liter of solution.
When 0.001 M of HCl dissociates then it gives 0.001 of hydrogen ion
and 0.001 M of chloride ion 
.
(B) 0.01 M HCl
0.01 M concentration means, 0.01 moles present in 1 liter of solution.
When 0.01 M of HCl dissociates then it gives 0.01 of hydrogen ion
and 0.01 M of chloride ion 
.
(C) 10 M HCl
10 M concentration means, 10 moles present in 1 liter of solution.
When 10 M of HCl dissociates then it gives 10 of hydrogen ion
and 10 M of chloride ion 
.
(D) 0.001 M HCl
0.1 M concentration means, 0.1 moles present in 1 liter of solution.
When 0.1 M of HCl dissociates then it gives 0.1 of hydrogen ion
and 0.1 M of chloride ion 
.
From this we conclude that, 10 M HCl has the highest concentration of hydrogen ion
.
Ответ:
The equivalence point is where the number of moles of one reactant reacts completely with the moles of the other reactant.
The equivalence point is found by using suitable indicators and carrying out a titration of the acid and base. Indicators include phenolphthalein and methyl orange. Equivalence points on a pH curve is observed as a vertical line.