It is soft alkali metal that oxidizes rapidly in air and is very reactive with water generating sufficient heat to ignite the hydrogen emitted in the reaction.
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Similar Questions
Q1
Potassium burns in water with a __________ flame.
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Q2
Potassium on reacting with cold water catches fire and burns in a flame. Guess the colour of the flame.
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Q3
When potassium reacts with cold water then hydrogen gas burns with a _____ coloured flame.
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Q4
(a) What is a balanced chemical equation? Why should chemical equations be balanced?
(b) Aluminium burns in chlorine to form aluminium chloride (AlCl3). Write a balanced chemical equation for this reaction.
(c) Potassium metal reacts with water to give potassium hydroxide and hydrogen gas. Write a balanced chemical equation for this reaction.
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Q5
A reaction between lead and concentrated potassium hydroxide liberates a gas that burns with a characteristic pop-up sound. Identify that gas from the given options.