Question

Molarity of hcl if its density is 1.17%(w/v)

Answer 1

Given:
Density of HCl=1.17g/cm³

Molarity=(density/molar mass)x1000 moles per liter

molar mass of HCl=[1+35.5]=36.5g/mol

Molarity=(1.17/36.5)x1000 =32.05M

∴Molarity of liquid HCl with density equal to 1.17 g/cc is 32.05

Answer 2

Molarity of solution is 0.32 mole/L

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

$Molarity=\frac{n}{V_s}$

where,

n = moles of solute

$V_s$ = volume of solution in L

Given: 1.17 g of HCl is dissolved in 100 ml of solution or 0.1 L of solution

moles of HCl (solute) =  $\frac{\text {give mass}}{\text {Molar Mass}}=\frac{1.17g}{36.5g/mol}=0.032mol$

Now put all the given values in the formula of molality, we get

$Molarity=\frac{0.032}{0.1l}=0.32mole/L$

Therefore, the molarity of solution is 0.32 mole/L

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