Discovery of Sulphuric Acid

Q.

What is the color of copper sulphate crystals?

1. Blue

2. Brown

3. Orange

4. Green

Q.

The molecular mass of sulphuric acid is ___ g/mol.

1. 98.075

2. 190

3. 72.075

4. 79

Q.

A gas cylinder contains 24 x 10²⁴ molecules of nitrogen gas. If Avogadro’s number is 6 x 10²³ and the relative atomic mass of nitrogen is 14, calculate:

1. 1.75 kg, 850 kg

2. 1.12 kg, 600 kg

3. 2.03 kg, 740 kg

4. 2.03 kg, 720 kg

5. 1.12 kg, 896 kg

6. 3.00 kg, 650 kg

Q.

Sulphuric acid was called ________ by medieval European alchemists.

1. Spirit of Vitriol

2. Vitriol

3. Oil of vitriol

4. Vitriol acid

Q. Sulphuric acid is a mineral acid that is composed of sulphur, .

1. hydrogen and oxygen
2. and oxygen
3. nitrogen and oxygen
4. carbon and oxygen

Q.

(a) Calculate the empirical formula of the compound having 37.6% sodium, 23.1% silicon and 39.3% oxygen (O = 16; Na = 23; Si = 28).
(b) The empirical formula of a compound is C₂H₅. It has a vapour density of 29. Determine the relative molecular mass of the compound and hence its molecular formula.

Q.

Calculate the relative molecular masses of (Use K = 39, Cl = 35.5, O = 16, C = 12, H = 1, Na = 23, N = 14, S = 32)
(a) potassium chlorate
(b) sodium acetate
(c) chloroform
(d) ammonium sulphate

Q. Which planet has a high concentration of Sulphuric acid?

1. Mercury
2. Neptune
3. Mars
4. Venus

Q.

What is the correct formula of sulphuric acid?

1. $HS{O}_3$

2. $H_{2}S{O}_3$

3. $H_{2}S{O}_4$

4. $HS{O}_4$

Q.

Calculate the relative molecular mass and vapour density of methyl alcohal ch3oh if 160g of the alcohal on vaporization has a volume of 112 litres at s.t.p

Q.

What is the correct formula of sulphuric acid?

1. $HS{O}_3$

2. $H_{2}S{O}_3$

3. $H_{2}S{O}_4$

4. $HS{O}_4$

Q.

112 cm³ (at STF) of a gaseous fluoride of phosphorus has a mass of 0.63 g.

Calculate the relative molecular mass of the fluoride. If the molecule of the fluoride contains only one atom of phosphorus, determine the formula of the phosphorus fluoride.

[F = 19; F = 31].

1. 6

2. 5

3. 4

4. 3

5. 8

Q.

Use of ether..

Q.

An organic compound with vapour density = 94 contains C = 12.67%, H = 2.13%, and Br = 85.11%. Find the molecular formula.
[Atomic mass: C = 12, H = 1, Br = 80]

Q. The mass of 5.6 dm cube of a certain gas at STP is 12.0 g. Calculate the relative molecular mass of the gas.

Q.

A, B, C and D summarize the properties of sulphuric acid depending on whether it is dilute or concentrated. Choose the property (A, B, C or D), depending on which is relevant to each of the preparations (i) to (iii):
A. Dilute acid (typical acid properties)
B. Non-volatile acid
C. Oxidizing agent
D. Dehydrating agent
(i) Preparation of hydrogen chloride.
(ii) Preparation of ethene from ethanol.
(iii) Preparation of copper sulphate from copper oxide.

Q. Two flasks A and B of equal volumes are kept under similar conditions of temperature and pressure . If flasks A holds 16.2 g of gas X while flasks B holds 1.35 g of hydrogen , calculate the relative molecular mass of gas X ?

Q.

Sulphuric acid is a highly corrosive strong mineral acid which has the molecular combination of

1. Sulphur, Hydrogen and Oxygen

2. Sulphur and Oxygen

3. Nitrogen, Sulphur and Oxygen

4. Carbon, Sulphur, Hydrogen and Oxygen

Q.

4.5 moles of calcium carbonate are reacted with dilute hydrochloric acid.

What is the mass of 4.5 moles of calcium carbonate? (Relative molecular mass of calcium carbonate is 100).

1. 450 g

2. 352 g

3. 527 g

4. 360 g

5. 253 g

Q.

(a) Name the process used for the large scale manufacture of sulphuric acid.
(b) Which property of sulphuric acid accounts for its use as a dehydrating agent?
(c) Concentrated sulphuric acid is both an oxidising agent and a non-volatile acid. Write one equation each to illustrate the properties of sulphuric acid mentioned above.

Q.

Which of the following acid is also known as oil of vitriol?

1. Nitric acid

2. Carbonic acid

3. Hydrochloric acid

4. Sulphuric acid

Q.

Arrange the following process of formation of H₂SO₄ on the planet Venus in the sequence of occurrence.

I.The reaction of Sulphur dioxide with atomic oxygen to form Sulphur trioxide.

II.Sun's photochemical action on carbon dioxide to form carbon monoxide and atomic oxygen.

III.The reaction of Sulphur trioxide with water to form sulphuric acid.

1. II, I, III

2. III, II, I

3. II, III, I

4. I, II, III

Q.

Sulphuric acid was initially called ___.

1. Oil of vitrol

2. Power of Vitriol

3. Water of Vitriol

4. Fuel of Vitriol

Q.

4.5 moles of calcium carbonate are reacted with dilute hydrochloric acid.

What mass of calcium chloride is formed? [Relative molecular mass of calcium chloride is 111].

1. 470.5 g

2. 270.5 g

3. 360.5 g

4. 499.5 g

5. 380.5 g

Q.

What is the correct formula of green vitriol?

1. $ZnS{O}_4.5H_{2}O$

2. $ZnS{O}_4.2H_{2}O$

3. $F{e}_2(S{O}_4{)}_3.7H_{2}O$

4. $FeS{O}_4.7H_{2}O$

Q.

The molecular mass of sulphuric acid is ___ g/mol.

1. 98.075

2. 190

3. 72.075

4. 79

Q. Which planet has a high concentration of Sulphuric acid?

1. Mercury
2. Neptune
3. Mars
4. Venus

Q.

Calculate the molar mass of HNO₃

Compare it with its formula unit mass

Q. $27.6$ g of $K_{2}C{O}_3$ was treated by a series of reagents so as to convert all of its carbon to $K_2{Zn}_3{\left[Fe{\left(CN\right)}_6\right]}_2$. Calculate the mass of the product formed. (round it to nearest integer value)

Q.

in later middle ages, sulphuric acid was also known as ___