Chemistry, 15.07.2019 13:00 lizzy2951

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.)

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Answer from: marquezsturgis

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.

Answer from: stef76

The molarity of a solution that contains 25g of HCl in 150mL of solution is 4.56M.

MOLARITY:The molarity of a solution can be calculated by dividing the number of moles in the substance by its volume. That is;Molarity = no. of moles ÷ volume The number of moles in 25g of HCl can be calculated as follows:moles of HCl = 25g ÷ 36.5g/molmoles of HCl = 0.685molMolarity of HCl = 0.685mol ÷ 0.150LMolarity of HCl = 4.56M

Therefore, the molarity of a solution that contains 25g of HCl in 150mL of solution is 4.56M.

Learn more about molarity at: link

Answer from: Quest

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.

chemical decomposition is opposite of chemical synthesis.

Answer from: Quest

- decrease the number of plants and animals living in the water.

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What is the molarity of a solution that contains 25 g of hcl in 150 ml of solution? (the molar mass...

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