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Solution: Which of the following is an example of the law of multiple ...

Question

Which of the following is an example of the law of multiple proportions? Explain

a. Two different samples of water are found to have the same ratio of hydrogen to oxygen

b. When hydrogen and oxygen react to form water, the mass of water formed is exactly equal to the mass of hydrogen and oxygen that reacted. 

c. The mass ratio of oxygen to hydrogen in water is 8:1. The mass ratio of oxygen to hydrogen in hydrogen peroxide. (a compound that only contains hydrogen and oxygen) is 16: 1.

 

Video Transcript

Hey guys, in this question we're asked which one of the three choices represents the law of multiple proportions? Basically the gist of it is when we have 2 elements it just really means that 2 elements can combine in in different combinations to give us whole numbers in terms of the ratios to another, here out of this question the one that would represent the law of multiple proportions would have to be the third choice and in the third choice they tell us that the ratio of oxygen to hydrogen in water is 8 to 1 and then here they also tell us that the ratio of oxygen to hydrogen in hydrogen peroxide is 16 to 1, remember how are they coming up with these numbers? Here this is 2 grams this weighs 16 grams both are divisible by 2 so that's how it's a 1 and 8 relationship but here we're doing Oxygen first then hydrogen, same thing here this is 2 and this here is 32 both are divisible by 2, so the law of multiple proportions 2 elements A and B can be combined in different proportions which represent whole numbers so option C would have to be the one that represents the law of multiple proportions.