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प्रश्न
Give one example of a combination reaction which is also exothermic.
उत्तर
Carbon burns in air to form carbon dioxide.
C (s) + O2 (g) → CO2 (g)
Heat is released during this reaction.
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संबंधित प्रश्न
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?
(c) With which substance metal X combines to form powder Y?
(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.
Define a chemical reaction.
What happens during a chemical reaction ?
Classify the following reaction as combination, decomposition, displacement, precipitation and neutralization. Also balance the equation.
\[\ce{CaCO3_{(s)} ->[heat]CaO_{(s)} + CO2_{(g)}}\]
Explain the following type of chemical reaction, giving two examples for it:
Combination reaction
What are chemical combination or synthesis reactions ? Chemical combination or synthesis:
What effect does an increase in concentration of H+ (aq.) in a solution have on the pH of solution?
Explain the terms with examples.
Combination reaction
The chemical reaction between copper and oxygen can be categorized as ______.
- Assertion: Rusting of Iron is endothermic in nature.
- Reason: As the reaction is slow, the release of heat is barely evident.
