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Two samples A and B of a pure substance containing elements Y and Z are obtained from two different sources. 5g of sample A contains 1.25 g of Z. Sample B is made of 75% of Y by weight. This is an illustration of which of the following laws?
  • a)
    Law of constant proportion
  • b)
    Law of multiple proportion
  • c)
    Law of mass conservation
  • d)
    Avagadro’ s Law
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Two samples A and B of a pure substance containing elements Y and Z ar...
B) Law of multiple proportion. This is because the two samples contain the same elements, but in different proportions. Sample A has a fixed ratio of Y to Z, while sample B has a varying ratio depending on the amount of Y present. This is a characteristic of the Law of multiple proportion, which states that when two elements combine to form different compounds, the ratio of their masses can be expressed in small whole numbers.
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Community Answer
Two samples A and B of a pure substance containing elements Y and Z ar...
In sample A,
5 g of sample contains 1.25 g Z
⇒ Weight of Y = 5 – 1.25 = 3.75 g
In sample B,
75% of y is present by weight
⇒ 100 g ⇒ 75 g of Y
∴ 5 g of sample will weigh
= (75/100) x 5 = 3.75 g
∴ Given Data illustrates law of constant proportion.
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Two samples A and B of a pure substance containing elements Y and Z are obtained from two different sources. 5g of sample A contains 1.25 g of Z. Sample B is made of 75% of Y by weight. This is an illustration of which of the following laws?a)Law of constant proportionb)Law of multiple proportionc)Law of mass conservationd)Avagadro’ s LawCorrect answer is option 'A'. Can you explain this answer?
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