Home
Class 12
CHEMISTRY
8 gm of sulphus is completely burnt to g...

8 gm of sulphus is completely burnt to get sulphur dioxide. The number of molecules of `SO_(2)` obtained is

A

`6xx10^(23)`

B

`3xx10^(23)`

C

`1.5xx10^(23)`

D

`7.5xx10^(22)`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem of determining the number of molecules of sulfur dioxide (SO₂) produced when 8 grams of sulfur (S) is completely burnt, we can follow these steps: ### Step 1: Write the balanced chemical equation The combustion of sulfur in oxygen can be represented by the following balanced equation: \[ S + O_2 \rightarrow SO_2 \] ### Step 2: Calculate the number of moles of sulfur To find the number of moles of sulfur, we use the formula: \[ \text{Number of moles} = \frac{\text{Given mass}}{\text{Molar mass}} \] The molar mass of sulfur (S) is approximately 32 g/mol. Given that we have 8 grams of sulfur: \[ \text{Number of moles of S} = \frac{8 \, \text{g}}{32 \, \text{g/mol}} = 0.25 \, \text{moles} \] ### Step 3: Determine the number of moles of sulfur dioxide produced From the balanced equation, we see that 1 mole of sulfur produces 1 mole of sulfur dioxide. Therefore, the number of moles of sulfur dioxide produced will be the same as the number of moles of sulfur: \[ \text{Number of moles of SO}_2 = 0.25 \, \text{moles} \] ### Step 4: Calculate the number of molecules of sulfur dioxide To find the number of molecules, we use Avogadro's number, which is approximately \(6.022 \times 10^{23}\) molecules/mol. The total number of molecules of SO₂ can be calculated as follows: \[ \text{Number of molecules of SO}_2 = \text{Number of moles of SO}_2 \times \text{Avogadro's number} \] Substituting the values we have: \[ \text{Number of molecules of SO}_2 = 0.25 \, \text{moles} \times 6.022 \times 10^{23} \, \text{molecules/mol} \] Calculating this gives: \[ \text{Number of molecules of SO}_2 = 1.5055 \times 10^{23} \, \text{molecules} \approx 1.5 \times 10^{23} \, \text{molecules} \] ### Final Answer The number of molecules of sulfur dioxide (SO₂) obtained from burning 8 grams of sulfur is approximately \(1.5 \times 10^{23}\) molecules. ---
Promotional Banner

Similar Questions

Explore conceptually related problems

Calculate the number of molecules in 8 grams of O_(2) .

The number of moles of sulphur dioxide in 960 g is

Find number of molecules in 11.35 litres SO_(2) gas at STP.

0.6 g of carbon was burnt in the air to form CO_(2) . The number of molecules of CO_(2) introduced into the will be : C+O_(2)toCO_(2)

The ratio between the number of molecules in equal masses of CH_(4) and SO_(2) is

Sulphur dioxide is obtained by the action of dilute H_2 SO_4 on :

Some bacteria obtain their energy by oxidising sulphur, producing sulphuric acid as a by-product. In the laboratory, or in industry, the first step in the conversion of sulphur to sulphuric acid is to produce sulphur dioxide. The sulphur dioxide is converted to sulphur trioxide, which reacts with water to give sulphuric acid. Name one catalyst used industrially which speeds up the conversion of sulphur dioxide to sulphur trioxide.

When one molecule of Glucose is completely oxidized in aerobic respiration, how many molecules of carbon dioxide are released in tricarboxylic acid cycle?

Reaction of hydrated ferric chloride (FeCl_(3).6H_(2)O) with thionyl chloride gives anhydrous ferric chloride with evolution of hydrochloric acid (HCl) and sulphur dioxide (SO_(2)) gases. The number of sulphur dioxide (SO_(2)) molecules involved in the balanced chemical equation is :

A certain gaseous mixture contains methane and sulphur dioxide in ratio of 1:8 by mass. The ratio of the number of molecules is :-