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Laws of Definite Proportions, Multiple Proportions

Which of the ...

Question

Which of the following statements illustrates the law of multiple proportions?

An element forms two oxides, XO and

X O_{2}

containing

50 %

and

60 %

oxygen respectively. The ratio of masses of oxygen which combines with 1 g of element is 2:3

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Hydrogen sulphide contains

5.89 %

hydrogen, water contains

11.1 %

hydrogen and sulphur dioxide contains

50 %

oxygen.

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3.47 g of

B a C l_{2}

reacts with 2.36 g of

N a_{2} S O_{4}

to give 3.88 g of

B a S O_{4}

and 1.95 g of NaCl.

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20 mL of ammonia gives 10 volumes of

N_{2}

and 30 volumes of

H_{2}

at constant temperature and pressure

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Solution

The correct option is A An element forms two oxides, XO and $X O_{2}$ containing $50 %$ and $60 %$ oxygen respectively. The ratio of masses of oxygen which combines with 1 g of element is 2:3
Law of multiple proportions states that when two elements combine to form two or more compounds, the masses of one element which combine with the fixed mass of another element, will always be in ratio of whole numbers.
The statement is :
An element forms two oxides $X O$ and ${X O}_{2}$ containing $50$ % and $60$ % of oxygen respectively. The ratio of masses of $O_{2}$ which combine with $1 g$ of element of $2 : 3$ .

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Similar questions

Q. There are two oxides of sulphur. They contain 50 % and 60% of oxygen, respectively, by weights. The ratio of weights of sulphur, which combines with 1 g of oxygen, is:

Q. Hydrogen sulphide contains 94.11% sulphur, sulphur dioxide contains 50% oxygen and water contains 11.11% hydrogen. Show that these figures are in agreement with law of reciprocal proportions.

(a) A vessel contains N molecules of oxygen at a certain temperature and pressure. How many molecules of sulphur dioxide can the vessel accommodate at the same temperature and pressure?
(b) Each of the two flasks contain 2.0 g of gas at the same temperature and pressure. One flask contains oxygen and the other hydrogen.
(i) Which sample contains the greater number of molecules?
(ii) If the hydrogen sample contains N molecules, how many molecules are present in oxygen sample?

Which of the following statements indicates that law of multiple proportion is being followed ?

(a) Sample of carbon dioxide taken from any source will always have carbon and oxygen in the ratio 1 : 2

(b) Carbon forms two oxides namely $C O_{2}$ and CO, where masses of oxygen which combine with fixed mass of carbon are in the simple ratio 2 : 1

(c) When magnesium burns in oxygen, the amount of magnesium taken for the reactoin is equal to the amount of magnesium in magnesium oxide formed

(d) At constant temperature and pressure 200 mL of hydrogen will combine with 100 mL oxygen to produce 200 mL of water vapour

Q. Nitric oxide,

N O

, reacts with oxygen gas to form nitrogen dioxide, a dark brown gas.
What mass of nitrogen dioxide could be produced from

20.3 g

of nitric oxide and

5.89 g

of oxygen gas?

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