A student burnt a metal lsquo-A rsquo- found in the form of ribbon- The ribbon burnt with a dazzling flame amp- a white powder B is formed which is basic in nature- Identify lsquo-A rsquo- amp- lsquo-B rsquo- Write the balanced chemical equation-

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Standard X

Chemistry

Reaction of Metals with Water or Steam

A student bur...

Question

A student burnt a metal ‘A’ found in the form of ribbon. The ribbon burnt with a dazzling flame & a white powder B is formed which is basic in nature. Identify ‘A’ & ‘B’. Write the balanced chemical equation.

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Solution

The metal A is magnesium, while the compound B is magnesium oxide (MgO). Magnesium burns in air with a dazzling white flame, forming a white powder called magnesium oxide. Magnesium oxide is basic in nature. Following is the chemical equation for the reaction
2Mg + O₂ â†’ 2MgO

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Q. A silvery-white metal X taken in the form of ribbon, when ignited, burns in air with a dazzling white flame to form a white powder Y. When water is added to powder Y, it dissolves partially to form another substance Z.
(a) What could metal X be?
(b) What is powder Y?
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(d) What is substance Z? Name one domestic use of substance Z.
(e) Write a balanced chemical equation of the reaction which takes place when metal X burns in air to form powder Y.

Q. A magnesium ribbon is burnt in oxygen to give a white compound 'X' accompanied by emission of light. If the burning ribbon is now placed in an atmosphere of nitrogen, it continues to burn and forms a compound 'Y'. Write a balanced chemical equation when 'X' is dissolved in water.

Question 36
A magnesium ribbon is burnt in oxygen to give a white compound X accompanied by emission of light. If the burning ribbon is now placed in an atmosphere of nitrogen, it continues to burn and forms a compound Y.

(a) Write the chemical formulae of X and Y.

(b) Write a balanced chemical equation, when X is dissolved in water.

What is a redox reaction ? When a magnesium ribbon burns in air with a dazzling flame and forms a white ash, is magnesium oxidised or reduced ?

Q. Question 20.2

Write the balanced chemical equation for the following reaction and identify the type of reaction.

Magnesium ribbon is burnt in an atmosphere of nitrogen gas to form solid magnesium nitride.

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A student burnt a metal ‘A’ found in the form of ribbon. The ribbon burnt with a dazzling flame & a white powder B is formed which is basic in nature. Identify ‘A’ & ‘B’. Write the balanced chemical equation.

The metal A is magnesium, while the compound B is magnesium oxide (MgO). Magnesium burns in air with a dazzling white flame, forming a white powder called magnesium oxide. Magnesium oxide is basic in nature. Following is the chemical equation for the reaction 2Mg + O2 â†’ 2MgO

The metal A is magnesium, while the compound B is magnesium oxide (MgO). Magnesium burns in air with a dazzling white flame, forming a white powder called magnesium oxide. Magnesium oxide is basic in nature. Following is the chemical equation for the reaction
2Mg + O₂ â†’ 2MgO