Law of Reciprocal Proportions

Q.

State and explain law of multiple proportions with the help of an example.

Q.

CO and CO₂ illustrate the law of multiple proportions.

1. True
2. False

Q. Carbon in carbon dioxide and carbon disulphide is 27.27% and 15.79% respectively. Sulphur dioxide contains 50% sulphur. Prove that these data verify the law of reciprocal proportions.

Q.

The first and second ionization enthalpies of metal are $496$ and $4560\mathrm{kJ}{\mathrm{mol}}^{-1}$ respectively. How many moles of $\mathrm{HCl}$ and ${\mathrm{H}}_2{\mathrm{SO}}_4$, respectively, will be needed to react completely with 1 mole of metal hydroxide?

1. 1 and 2

2. 1 and 0.5

3. 1 and 1

4. 2 and 0.5

Q. "Law of Reciprocal Proportion" is also known as:

1. Law of Multiple Proportions
2. Law of Proportion
3. Law of Equivalent Proportion
4. Law of Permanent Ratios

Q. Why Avogadro's number is only 6.022*10 to the power of 23

Q. Law of reciprocal proportion was proposed by:

1. Antoine Lavoisier
2. Jeremias Ritcher
3. James Rutherford
4. John Dalton

Q. Law of reciprocal proportions is also called :

1. The law of equivalent proportions
2. All of the above
3. Law of gaseous volume
4. Law of permanent ratios

Q.

Consider the following laws of chemical combination with examples.
I: Law of multiple proportions: N₂O, NO, NO₂
II: Law of reciprocal proportions: H₂O, SO₂, H₂S

Which is correct with examples?

1. I and II
2. I
3. II
4. None of these

Q.

Calculate the molecular weight of the following

Lead nitrate $\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2$

Q. Hello sir/madam,
In the concept of CONSTANT PROPORTION:
For Carbon monoxide
3grms of carbon+4grms of oxygen =carbon monoxide
By constant proportion:
1grm of carbon =4/3 gems of oxygen has been said in the vedio.
My doubt is that why
1grm of carbon can be written as 3/4grms of oxygen.

Q. “If two diferent elements combine separately with the same weight of a third element, the ratio of the masses in which they do so are either same or a simple multiple of the mass ratio in which they combine among themselves.”
This law is given by.

1. John Dalton
2. Antoine lavoisier
3. Gay Lussac
4. Jeremias Ritcher

Q. 2.00 g of the hydroxide of a metal gave 1.31 g of its oxide. Calculate the equivalent weight of the metal.

Q. $A$ g of sulphur and $B$ g of oxygen are allowed to react to form $S{O}_2$. What will be the ratio of $A:B$ ?

1. $1:1$
2. $1:2$
3. $1:3$
4. $1:4$

Q. Carbon forms two oxides in which percentage of carbon is 42.9% and 27.3% respectively.
Above data illustrates:

1. Law of mass conservation.
2. Law of reciprocal proportion
3. Law of constant proportion
4. Law of multiple proportion

Q. $H_{2}S$ contains $94.11\%$ sulphur; $S{O}_2$ contains $50\%$ oxygen and $H_{2}O$ contains $11.11\%$ hydrogen. Thus :

1. law of multiple proportions is followed.
2. law of reciprocal proportions is followed.
3. law of conservation of mass is followed.
4. all of the above are followed

Q. The law of reciprocal proportions was proposed by :

1. Jeremias Richter
2. Antoine
3. Joseph proust
4. Joseph louis

Q. In water $H_{2}O$ and hydrogen peroxide $H_2{O}_2$, the masses of oxygen which combine with fixed mass of hydrogen bear simple whole number ratio i.e. 1 : 2. This is illustration of:

1. avagadro's law
2. law of multiple proportions
3. law of definite proportions
4. gay lussac's law

Q. Aluminium oxide contains 52.9% aluminium and carbon dioxide contains 27.27% carbon. Assuming the validity of the law of reciprocal proportions, calculate the percentage of aluminium in aluminium carbide.

Q. Choose the non-metallic oxide from the following:

1. $A{l}_2{O}_3$
2. $C{O}_2$
3. $F{e}_2{O}_3$
4. $FeO$

Q. Match the laws of chemical combinations (in list I) with the examples followed (in list II).

Q.

What are the different laws of chemical combination?

Q. Which of the following sets of compounds correctly illustrate the law of reciprocal proportion ?

1. $N_{2}O,N{H}_3,S{O}_2$
2. $N{O}_2,N{H}_3,S{O}_3$
3. $P_2{O}_5,P{H}_3,H_{2}O$
4. None of these

Q. The weight ratio of two elements A and B which combine with the fixed weight of C separately is either the same or some simple whole number multiple of the weight ratio in which A and B combine together. This statement explains :

1. law of multiple proportion.
2. law of reciprocal proportion.
3. law of conservation of mass.
4. law of constant composition.

Q.

One of the following combinations illustrate law of reciprocal proportions :

1. $N_2{O}_3,N_2{O}_4,N_2{O}_5$
2. $NaCl,NaBr,NaI$
3. $P{H}_3,P_2{O}_3,P_2{O}_5$
4. $C{S}_2,C{O}_2,S{O}_2$

Q. Which one of the following sets of compounds correctly illustrate the law of reciprocal proportions.

1. $P_2{O}_3,P{H}_3,H_{2}O$
2. $P_2{O}_5,P{H}_3,H_{2}O$
3. $N_2{O}_5,N{H}_3,H_{2}O$
4. $N_{2}O,N{H}_3,H_{2}O$
5. $N{O}_2,N{H}_3,H_{2}O$

Q. One part of an element (A) combines with two parts of another element (B). Six parts of element (C) combines with 4 parts of (B). If (A) and (C) combine together, then the ratio of their weights will be governed by:

1. law of definite proportion
2. law of multiple proportion
3. law of reciprocal proportion
4. law of conservation of mass

Q. $KI$ contains $23.6$% potassium, $KCl$ contains $52$% potassium then $ICl$ contains ______% of iodine.

1. $77.8$
2. $68.9$
3. $72.9$
4. $75.1$

Q. 7.95 gm oxide of copper on reaction with hydrogen shows a mass loss and the residue obtained weighs 6.35 gm. In another experiment, 19.05 gm of copper was dissolved in nitric acid and the copper nitrate produced was converted to oxide weighing 23.85 gm. This data illustrates:

1. Law of multiple proportion
2. Law of mass conservation
3. Law of reciprocal proportion
4. Law of constant proportion

Q.

"If two different elements combine separately with the same weight of a third element, the ratio of the masses in which they do so are either the same or a simple multiple of the mass ratio in which they combine." is :

1. Law of definite proportions
2. Law of reciprocal proportions
3. Avagadro law
4. Law of conservation of mass