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3 years ago

11

What is the molarity of a 10 l solution containing 5.0 moles of solute

2 answers:

zhannawk [14.2K]3 years ago

3 0

molaity= moles/L
molarity= 5.0 moles/ 10 L
molarity= 0.5

Elden [556K]3 years ago

3 0

Molarity = mole / volume in L =5 moles / 10 L 0.5 mol/L

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Differentiate benzene and cyclohexane

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20 mL of Ba(OH)2 solution with unknown concentration was neutralized by the addition of 43.89 mL of a .1355 M HCl solution. Calc

bezimeni [28]

Answer:

Concentration of the barium ions = $[Ba^{2+}] = 0.4654 M$

Concentration of the chloride ions = $[Cl^{-}]=0.9308 M$

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$Moles (n)=Molarity(M)\times Volume (L)$

Moles of hydrogen chloride = n

Volume of hydrogen chloride solution = 43.89 mL = 0.04389 L

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According to reaction, 2 moles of HCl reacts with 1 mole of barium hydroxide.

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1 mole of barium hydroxide gives 1 mole of barium ion in an aqueous solution. Then 0.029735 moles of barium hydroxide will give:

$=1\times 0.029735 mol= 0.029735 mol$

Volume of solution after neutralization reaction :

= 20.0 mL + 43.89 mL = 63.89 mL = 0.06389 L

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1 mole of barium chloride gives 1 mole of barium ions and 2 moles of chloride ions in an aqueous solution.

Then concentration of chloride ions will be:

$[Cl^-]=2\times [Ba^{2+}]=2\times 0.4654 M=0.9308 M$

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