As the temperature of a liquid increases, the solubility of a gas in the liquid

A. increases.

B. decreases.

C. stays the same.

D. either increases or decreases depending upon the liquid

B. decreases.

Explanation:

the temperature exerts a notable influence on the solubility of a gas in a liquid, when the temperature increases, the solubility of the gas decreases, since it tends to expand.

In the case of gases, the decrease in intermolecular forces "liberates" the gas molecules from the forces that keep them in solution and they will escape from the container, with which it will be observed that with increasing temperature.

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol