Advertisements
Advertisements
प्रश्न
Why is copper not used to prepare hydrogen by the action of dilute hydrochloric acid or dilute sulphuric acid on the metal, [copper [Cu] below hydrogen – no reaction]
Advertisements
उत्तर
Cu is below hydrogen in reactivity series and cannot displace H2 from acid and no-reaction takes place.
APPEARS IN
संबंधित प्रश्न
Give reasons for the following:
Hydrogen can be used as a fuel.
What is hydrogenation?
Under what conditions can hydrogen be made to combine with oxygen?
Name the products and write the equation for the reaction.
With reference to the uses of hydrogen, give reason for the following:
Reaction of hydrogen with nitrogen under specific conditions finds industrial utility.
Complete and balance the equation:
Conversion of hydrogen to -
Water - 2H2 + O2 → ________
Complete and balance the equation:
Conversion of hydrogen to -
Hydrogen chloride - H2 + Cl2 → ________
Complete and balance the equation:
Hydrogen in metallurgy - reduction of
Zinc oxide - ZnO + H2 → ________ + ______
Complete and balance the equation:
Hydrogen in metallurgy - reduction of
Iron [III] oxide - Fe2O3 + 3H2 → ________ + ______
Place the metals calcium, iron, magnesium and sodium in order of their activity with water, placing the most active first. Write the equation for each of the above metals which react with Water.
State the use of hydrogen –
In the extraction of metals
