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3 years ago

A solution is saturated in CO2 gas and KNO3 at room temperature. What happens when the solution is warmed to 75°C?

Chemistry

1 answer:

nignag [31]3 years ago

6 0

Answer:

gaseous CO2 bubbles out of the solution

Explanation:

We already know that the dissolution of a gas in water is exothermic. Hence, when the temperature of a solution containing a gas is increased, the solubility of the gas decreases and the gas bubbles out of the solution.

Similarly, the dissolution of KNO3 in water is endothermic. This implies that the solubility of the solid increases with increasing temperature.

Thus the solid becomes more soluble at 75°.

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yuradex [85]

Answer:

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Explanation:

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3 years ago

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elena55 [62]

Answer:

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Determine the mass (in g) of a substance, with a density of 2.26 g/mL, that occupies 350.0 mL.

Andreyy89

Answer:

m = 79.1 grams

Explanation:

Given that,

Density, d = 2.26 g/mL

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We need to find the mass of the substance. We know that the density of an object is equal to the mass per unit volume. So,

d = m/V

$m=d\times V\\\\m=2.26\ g/mL\times 35\ mL\\\\m=79.1\ g$

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3 years ago

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Lorico [155]

Answer:

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Explanation:

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The pH of the ocean is 8.1. What is the concentration of hydronium ions?

skad [1K]

Answer:

7.9 × 10⁻⁹ M

Explanation:

Step 1: Given data

pH of the ocean: 8.1

Step 2: Calculate the concentration of hydronium ions

We will use the definition of pH.

pH = -log [H⁺] = -log [H₃O⁺]

[H₃O⁺] = [H⁺] = antilog -pH

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Since [H₃O⁺] < 10⁻⁷ M, the solution is basic.

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3 years ago