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AveGali [126]
3 years ago
14

What is the molarity of a solution that contains 25 g of HCl in 150 mL of solution? (The molar mass of HCl is 36.46 g/mol.)

Chemistry
2 answers:
lawyer [7]3 years ago
7 0

Explanation:

Molarity is defined as number of moles of solute in liter of solution.

Whereas number of moles is equal to mass of given substance divided bu its molar mass.

Since molar mass of HCl is 36.46 g/mol. Therefore, calculate the number of moles of HCl as follows.

       Number of moles of HCl = \frac{mass of given}{Molar mass of HCl}

                                             = \frac{25 g}{36.46 g/mol}

                                             = 0.686 mol

Hence, molarity of solution will be as follows.

              Molarity = \frac{no. of moles}{volume of solution}

                            = \frac{0.686 mol}{0.15 L}

                            = 4.573 mol/L

Thus, we can conclude that molarity of  a solution that contains 25 g of HCl in 150 mL of solution is 4.573 mol/L.

Tomtit [17]3 years ago
5 0

Answer:moles

Explanation:

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3 years ago
What volume of a concentrated HCl solution, which is 36.0% HCl by mass and has a density of 1.179 g/mL, should be used to make 4
Ivenika [448]

Answer:

130ml of HCl(36%) in 4.90L solution => pH = 1.50

Explanation:

Need 4.90L of HCl(aq) solution with pH = 1.5.

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=> V(conc) needed = [(0.032)(4.91)/12]Liters = 0.0130Liters or 130 ml.

Mixing Caution => Add 131 ml of HCl(36%) into a small quantity of water (~500ml) then dilute to the mark.

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3 years ago
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3 years ago
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