Advertisements
Advertisements
Question
Complete and balance the equation:
[General method]
Reactions of active metals - cold water
Calcium - Ca + H2O → ______+ _______ [g]
Advertisements
Solution
Calcium - Ca + 2H2O → Ca[OH]2 + H2 [g]
APPEARS IN
RELATED QUESTIONS
Fill in the blank
Hydrogen is ..................... than air.
MULTIPLE CHOICE QUESTIONS
Hydrogen burns in oxygen to form
- hydrogen sulphide
- nitrates
- water
- ammonia
Complete the following word equation:
Sodium hydroxide + zinc → hydrogen + _________
Hydrogen can be prepared with the help of cold water. Give a reaction of hydrogen with:
A monovalent metal
Give reason for the following:
In the preparation of hydrogen by electrolysis of water – the distilled water used is acidified.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
An efflorescent substance which leaves a residue having the same colour as the substance and evolves a gas which changes the colour of cobalt chloride paper.
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Zinc - Zn + 2HCl → ______ + _______ [g]
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Iron - Fe + 2HCl → ______ + _______ [g]
Account for the following fact:
Though lead is above hydrogen in the activity series, it does not react with dilute hydrochloric acid or dilutes sulphuric acid.
State the condition and give balanced equation for the conversion of water gas to hydrogen – in the Bosch process.
