A solution is prepared by dissolving 5.6 g of KOH is 250 ml of it. Calculate the molarity of the solution?(molar mass KOH: 56 g/ mol) [Ans. : 419M]

Answer 1

#c = "0.40 mol/L"#

The formula for molar concentration #c# is
#c = "moles"/"litres"#
#"Moles" = 5.6 color(red)(cancel(color(black)("g KOH"))) × "1 mol KOH"/(56.11 color(red)(cancel(color(black)("g KOH")))) = "0.0998 mol KOH"#
#"Litres" = 250 "mL" × "1 L"/(1000 "mL") = "0.2500 L"#
#c = "0.0998 mol"/"0.2500 L" = "0.40 mol/L"#
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Answer 2

To calculate the molarity of the solution, use the formula: Molarity (M) = moles of solute / volume of solution in liters.

First, calculate the moles of KOH: moles = mass / molar mass = 5.6 g / 56 g/mol = 0.1 mol

Next, convert the volume from milliliters to liters: 250 ml = 250/1000 = 0.25 L

Now, plug the values into the formula: Molarity = 0.1 mol / 0.25 L = 0.4 M

So, the molarity of the solution is 0.4 M.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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