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Question
Complete the following word equation:
Sodium hydroxide + zinc → hydrogen + _________
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Solution
Sodium hydroxide + zinc → hydrogen + sodium zincate
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Multiple Choice Question
The metal which reacts with cold water to produce hydrogen is
TRUE \ FALSE
Hydrogen does not combine with nitrogen under ordinary conditions.
TRUE \ FALSE
reacts with hot water to form copper oxide and hydrogen.
What is noticed if the products are not allowed to escape?
Why are the following metals not used in the lab preparation of hydrogen?
calcium
Complete and balance the following reaction.
Al + H2SO4 →_____________ +___________
Starting from hydrogen gas how would you obtain a neutral liquid.
Name an element whsich reacts violently with water at room temperature.
Account for the following fact:
Potassium and sodium are not used to react with dilute ‘hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.
Give a balanced equation for the following conversion.
\[\ce{CO + H2<-H2O->CO2 + H}\]
