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dalvyx [7]
3 years ago
6

The solubility of a gas is 0.14 g/L at STP. Its solubility at 50.°C and the

Chemistry
1 answer:
Solnce55 [7]3 years ago
6 0

Answer:

0.12 g/L

Explanation:

We first calculate its molar mass M = solubility at STP × molar volume = 0.14 g/L × 22.4 L/mol = 3.14 g/mol

Using the ideal gas law, PV = mRT/M where P = pressure at STP = pressure at 50°C = 1 atm, V = volume of gas, m = mass of gas, R = molar gas constant = 0.082 atm L/mol-K, T = temperature of gas = 50°C = 273 + 50 = 323 K and M =molar mass of gas = 3.14 g/mol

So, PM/RT = m/V = solubility of gas at 50°C

So, PM/RT = 1 atm × 3.14 g/mol/(0.082 atm L/mol-K × 323 K)

= 3.14 atm g/mol ÷ 26.486 atm L/mol

= 0.119 g/L

≅ 0.12 g/L

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50.0 g of NaNO3 are dissolved into enough water to make 250 mL of solution. What is the molarity of this solution?
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Explanation:

Molarity is mol/L of solution. We have to convert the g to mol and the mL to L. G to mol uses the molar mass of the compound. The molar mass of NaNO₃ is 85.00g/mol.

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Then you have to convert mL to L.

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Now divide the mol by the L.

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