Advertisements
Advertisements
Question
Describe the reaction of potassium with water. Write the equation of the reaction involved.
Solution
Potassium reacts violently with water to form potassium hydroxide and hydrogen gas. The huge amount of heat evolved in the reaction will immediately burn the hydrogen gas produced in the reaction.
2K(s) + 2H2O → 2KOH(aq) + H2(g) + HEAT
APPEARS IN
RELATED QUESTIONS
What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?
Write equation for the reaction of magnesium with oxygen.
Complete and balance the following equation:
Na2O + H2O →
Fill in the following blank with suitable word:
Magnesium liberates ............... gas on reacting with hot boiling water.
Fill in the following blank with suitable word:
The white powder formed when magnesium ribbon burns in oxygen is of ....................
What type of oxides are formed when metals combine with oxygen? Explain with the help of an example.
What is the action of water on sodium ? Write equation of the chemical reaction involved.
The least reactive metal among the following is:
(a) sodium
(b) silver
(c) copper
(d) lead
Which of the following pair of reactants can undergo a displacement reaction under appropriate conditions?
(a) MgSO4 + Fe
(b) ZnSO4 + Fe
(c) MgSO4 + Pb
(d) CuSO4 + Fe
State and explain the reaction, if any, of the following metals with a solution of copper sulphate:
(a) Gold
(b) Copper
(c) Zinc
(d) Mercury