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Calculate the amount of carbon dioxide that could be produced when 1 mole of carbon is burnt in air.

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प्रश्न

Calculate the amount of carbon dioxide that could be produced when 1 mole of carbon is burnt in air.

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उत्तर

The balanced reaction of combustion of carbon can be written as:-

\[\ce{\underset{1 mole}{C_{(s)}} + \underset{(32 g)}{\underset{1 mole}{O_{2(g)}}} -> \underset{(44 g)}{\underset{1 mole}{CO_{2(g)}}}}\]

As per the balanced equation, 1 mole of carbon burns in 1 mole of dioxygen (air) to produce 1 mole of carbon dioxide.

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अध्याय 1: Some Basic Concepts of Chemistry - EXERCISES [पृष्ठ २५]

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एनसीईआरटी Chemistry - Part 1 and 2 [English] Class 11
अध्याय 1 Some Basic Concepts of Chemistry
EXERCISES | Q 1.4 - (i) | पृष्ठ २५

संबंधित प्रश्न

Explain the term Saturated solution giving examples.


If the density of methanol is 0.793 kg L–1, what is its volume needed for making 2.5 L of its 0.25 M solution?


Calculate the molarity of a solution of ethanol in water in which the mole fraction of ethanol is 0.040 (assume the density of water to be one).


A solution contains 40 g of common salt in 320 g of water. Calculate the concentration in terms of mass by the mass percentage of the solution.

Why does the molarity of a solution depend upon temperature?


Solve the following problem:

Write the following number in ordinary decimal form:

3.49 × 10−11


Solve the following problem:

Write the following number in ordinary decimal form:

43.71 × 10−4


Solve the following problem:

Your laboratory partner was given the task of measuring the length of a box (approx 5 in) as accurately as possible, using a metre stick graduated in milimeters. He supplied you with the following measurements:

12.65 cm, 12.6 cm, 12.65 cm, 12.655 cm, 126.55 mm, 12 cm.

State which of the measurements you would accept, giving the reason.


Name the process associated with the following

A drop of ink placed on the surface of water contained in a glass spreads throughout the water.


A child wanted to separate the mixture of dyes constituting a sample of ink. He marked a line by the ink on the filter paper and placed the filter paper in a glass containing water as shown in Fig.2.3. The filter paper was removed when the water moved near the top of the filter paper.

(i) What would you expect to see, if the ink contains three different coloured components?

(ii) Name the technique used by the child.

(iii) Suggest one more application of this technique.


If 500 mL of a 5 M solution is diluted to 1500 mL, what will be the molarity of the solution obtained?


Sulphuric acid reacts with sodium hydroxide as follows:

\[\ce{H2SO4 + 2NaOH -> Na2SO4 + 2H2O}\]

When 1 L of 0.1 M sulphuric acid solution is allowed to react with 1 L of 0.1 M sodium hydroxide solution, the amount of sodium sulphate formed and its molarity in the solution obtained is:

(i) 0.1 mol L–1

(ii) 7.10 g

(iii) 0.025 mol L–1

(iv) 3.55 g


Which of the following solutions have the same concentration?

(i) \[\ce{20 g of NaOH in 200 mL of solution}\]

(ii) \[\ce{0.5 mol of KCl in 200 mL of solution}\]

(iii) \[\ce{40 g of NaOH in 100 mL of solution}\]

(iv) \[\ce{20 g of KOH in 200 mL of solution}\]


Match the following physical quantities with units

Physical quantity Unit
(i) Molarity (a) g mL–1
(ii) Mole fraction (b) mol
(iii) Mole (c) Pascal
(iv) Molality (d) Unitless
(v) Pressure (e) mol L–1
(vi) Luminous intensity (f) Candela
(vii) Density (g) mol kg–1
(viii) Mass (h) Nm–1
  (i) kg

The molarity of pure water is ______.


250 g solution of D-glucose in water contains 10.8% of carbon by weight. The molality of the solution is nearest to ______.

(Given: Atomic weights are H, 1u; C, 12u; O, 16u)


The molality of solution containing 15.20 g of urea, (molar mass = 60) dissolved in 150 g or water is ______.


Find the molality of solution if boiling point increases by 1.75 K and molal elevation constant of solvent is 5K kg mol-1.


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