7. There are 2 solutions of Hydrochloric acid, HCI, and NaOH available to be mix

Question

7. There are 2 solutions of Hydrochloric acid, HCI, and NaOH available to be mixed Both solutions are 0.4M. Answer the following related questions: a. Write the reaction and label each reactant and product as aq, l, s, or g. b. What would be the limiting reactant, if 20.0 ml of the 0.4M acid solution mi: with 25.0m1 of the 0.4M base? Show your calculations! c. Is final solution is acidic or basic? Why? d. How many moles of excess reactant will be left behind? e. What is the molarity of Na' after the reaction is complete? f. How can we decide a solution is acidic or basic without any calculations?!!

Explanation / Answer

a) HCl (aq) + NaOH (aq) --> H2O (l) + NaCl (aq)

b) HCl is the limiting reagent. because both are reacting 1:1 ratio. so volume of acid is less than volume of base

c) final solution is basic in nature. because there is 5 ml exess base is left over after complete neutralization.

d) 5 ml extra base is left over. so 5/22400= 2.23 x 10-4 moles exess reagent left.

e) M1V1=M2V2

0.4x25/45 =M2=0.2222

f) as base left over it is basic in nature.

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