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maria [59]
3 years ago
10

How many milliliters of 0.02 M HCl are needed to react completely with 100 mL of 0.01 M NaOH?

Chemistry
2 answers:
Julli [10]3 years ago
7 0

Answer: Option (D) is the correct answer.

Explanation:

Molarity is number of moles divided by volume of the solution.

Mathematically,     Molarity = \frac{no. of moles}{Volume}

Also, in the given situation number of moles of both HCl and NaOH are equal. Therefore, volume of HCl will be calculated as follows.

               M_{HCl}V_{HCl} = M_{NaOH}V_{NaOH}

               0.02 M \times V_{HCl} = 0.01 M \times 100 mL

                V_{HCl} = \frac{0.01 M \times 100mL}{0.02}

                                              = 50 mL

Thus, we can conclude that volume of HCl is 50 mL.

serious [3.7K]3 years ago
3 0
The reaction of HCl and NaOH is HCl + NaOH = NaCl + H2O. So the mole number of HCl and NaOH is equal. So the volume of HCl =0.01*0.1/0.02=0.05 L =50 ml. So the answer is D).
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