If you cant see the image right click and go to view image (a) In your OWN words
ID: 536326 • Letter: I
Question
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(a) In your OWN words, explain Gay Lussac's Law of Combining Volumes and how it relates to a balanced equation. (copied answers will get no credit) (b) In Part 1, how will you know when the reactant gases are mixed in the CORRECT ratio? Part 2 of this experiment involves a titration between Gas A and a sample of air to determine the oxygen content of air. (c) What happens to the residual volume in the graduated cylinder during the titration? Clearly choose one answer. The residual volume stays the same. The residual volume is zero. The residual volume increases for the entire titration. The residual volume increases then decreases. The residual volume decreases for the entire titration. The residual volume decreases then increases.Explanation / Answer
1. (a) Gaylussac's law of combining volumes states that, when gases reacts to form new gases and when the volumes are measured at same temperature and pressure. Then the ratio of volumes of reactant gases to the product gases is simply a whole number.
Ex. Reaction of hydrogen gas with chlorine gas to form product:-
H2(1 mole) + Cl2(1 mole) --------->2HCl(2 moles)
Ratio of moles is in whole numbers as: 1:1:2 (H2 : Cl2 : HCl).
(b). If the equation is balanced. And all the moles of gases
Consumed to form product means if no reactant is remained
in the reaction then we can say that the gases are mixed
in the correct ratio.
Ex. If in reaction of hydrogen gas and chlorine gas, equal moles of both gases are required if not then the rectants not completely consumed and not in correct ratio.
( c) The residual volume remains the same because the number of moles of rectants and product remains same in this reaction of gas A titrated with the sample of air.
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