Advertisements
Advertisements
Question
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{MgO + H2}\]
Options
dilute acid
dilute alkali
cold water
conc. alkali
boiling water
conc. acid
steam
Advertisements
Solution
Reactant added to get the product:
\[\ce{MgO + H2:Boiling water}\]
APPEARS IN
RELATED QUESTIONS
A metal ______ hydrogen in the reactivity series gives hydrogen with ______.
Give reason for the following:
The end of the thistle funnel should be dipped under acid.
Choose the correct option:
Elements which show unique nature in the preparation of hydrogen are:
Hydrogen can be prepared with the help of cold water. Give a reaction of hydrogen with:
A divalent metal
Hydrogen may be prepared in the laboratory by the action of a metal on an acid.
Which of the metals copper, zinc, magnesium or sodium would be the most suitable?
Hydrogen may be prepared in the laboratory by the action of a metal on an acid.
Which of the acids dilute sulphuric, concentrated sulphuric, dilute nitric acid and concentrated nitric acid would you choose? Explain why you would not use the acids you reject.
Complete and balance the following reaction.
Zn + H2O →_____________ +___________
Complete and balance the equation:
[General method]
Reactions of metals with steam
Zinc - Zn + H2O → ______+ _______ [g]
Give a balanced equation for obtaining hydrogen from?
Steam using a trivalent metal
Give a balanced equation for the following conversion.
\[\ce{MgCl2<-HCl->FeCl2}\]
