Advertisements
Advertisements
Question
How would you show that silver is chemically less reactive than copper?
Advertisements
Solution
When silver is dipped in a copper sulphate solution, no reaction occurs. This means silver cannot displace copper from the copper sulphate solution. Hence, it shows that silver is chemically less reactive than copper.
APPEARS IN
RELATED QUESTIONS
Write equations for the reactions of calcium and potassium with water.
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be:
A student added few pieces of aluminium metal to two test tubes A and B containing aqueous solutions of iron sulphate and copper sulphate. In the second part of her experiment, she added iron metal to another test tubes C and D containing aqueous solutions of aluminium sulphate and copper sulphate.
In which test tube or test tubes will she observe colour change? On the basis of this experiment, state which one is the most reactive metal and why.
Name two metals which form amphoteric oxides.
What will happen if a strip of zinc is immersed in a solution of copper sulphate?
Fill in the following blank with suitable word:
Ordinary aluminium strips are not attacked by water because of the presence of a layer of ................. on the surface of aluminium.
Which of the following elements would yield a basic oxide.
Na, S, C, K, H
Why is white phosphorus kept immersed under water?
What is the action of water on sodium ? Write equation of the chemical reaction involved.
Write the equation for the reaction of Zinc with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
Hydrogen is not a metal but still it has been assigned a place in the reactivity series of metals. Why?
An element X reacts with hydrogen, when heated, to form a covalent hydride H2X. If H2X has a smell of rotten eggs, the element X is likely to be:
(a) carbon
(b) sulphur
(c) chlorine
(d) phosphorus
Out of the following oxides, the amphoteric oxide is:
(a) Fe2O3
(b) Al2O3
(c) P2O5
(d) N2O
An element X forms two oxides XO and XO2. The oxide XO is neutral but XO2 is acidic in nature. The element X is most likely to be:
(a) sulphur
(b) carbon
(c) calcium
(d) hydrogen
Name a metal which does not react with cold as well as hot water but reacts with steam.
What is the cause of chemical bonding (or chemical combination) of atoms of elements?
Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
An element X is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in the air. It reacts vigorously with water. Identify the element from the following.
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
Metals are generally solid. Which of the following metals is in the liquid state at room temperature?
