q4 fissures on the sea floor. If a water sample obtained near a vent was analyze

Question

q4

fissures on the sea floor. If a water sample obtained near a vent was analyzed to contain 15 hydrogen sulfide, what is its molar concentration? pp calculations Show P4. The solubility of gases in water is temperature dependent. For instance, at 1.0 atmosphere of pressure, the maximum solubility of CO2 in water at 35 °C is 0.6 ppm, while at 5 °C this increases to 1.4 ppm. Carbon dioxide also reacts with water according to the equation: CO2 + H2O--> the water. What will be the effect on pH if the water temperature is increased to 60 °c? Explain H2CO3 H+ HC03. This reaction has the effect of acidifying + 5. If you analyzed the O, concentration of lab water obtained from one of the large carboys and compared it to results obtained from a cold water tap in the same lab, you would find that o, concentration was much higher in water from the carboy, even though its Offer a reasonable explanation.

Explanation / Answer

At 60 C the solubility of CO2 in water will very less because on increase in temperature the solubility decreases , hence the amount of CO2 in water will also decrease. So the reaction rate will very less and the [H+] ion concentration will less so PH of water will high i.e water will be less acidic i.e increasing temperature PH will increase.( Because H+ ion concentration is less so pH is high or less acidic.)

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