QUESTION 1 10 points Save Answer An experimenter is testing different gasses for

Question

QUESTION 1 10 points Save Answer An experimenter is testing different gasses for possible reactivity with each other by mixing them in a water-filled tube. For each observation listed below select the statement that best describes whether or not it indicates a chemical reaction has taken place. The total volume of gas increases by the volume of added gas. There are no other A. no evidence of a reaction changes. B. evidence of a reaction - VThe total volume of gas decreases after the second gas is added. There are no other changes. E v The total volume of gas increases by the volume of added gas but the gas after mixing has a color that neither individual gas has. There are no other changes. - VThe total volume of gas increases by the volume of added gas. An acid-base indicator added to the water changes color where the gas is in contact with the water. E v The total volume of gas increases by less than the volume of added gas. There are no other changes.

Explanation / Answer

a)

no evidence of reaction

we reuqire color change/heat, or any other visible change

b)

if it decreases, then moels are reacting, therefore, ther eis enough evidence of reaction

c)

there is reaciton, evidenc eof reaction is present since color change is a chemical change

d)

if the pH change, then there is reaciton since H+ species are now present, then evidence of reaction

e)

no change implies no evidence for reaction

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