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3 years ago

Calculate the molarity of a solution made by 1,5kg of K. CO₂ in 850 mL of water.

Chemistry

1 answer:

anastassius [24]3 years ago

8 0

Answer:

17.83M

Explanation:

Given parameters:

Mass of KCO₂ = 1.5kg

Volume of water = 850mL

Unknown:

Molarity of solution = ?

Solution:

Molarity is defined as the number of moles per unit volume. It is the number of moles of solute in a given volume of solution.

Molarity = $\frac{number of moles }{volume}$

Number of moles of solute = $\frac{mass of KCO_{2} }{molar mass}$

Molar mass of KCO₂ = 39 + 12 + 3(16) = 99g/mol

Number of moles = $\frac{1500}{99}$ = 15.15moles

850mL : gives 0.85L

Molarity = $\frac{15.15}{0.85}$ = 17.83M

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3 years ago

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umka2103 [35]

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3 years ago

Consider the reaction 2 NO + O2 → 2 NO2

Sonbull [250]

Answer:

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Explanation:

The given reaction is:-

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The expression for rate can be written as:-

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3 years ago