Reactivity of Different Metals with Acids

Q.

Give 3 examples of acid reaction with metal

Q.

Do all metals react with acid to give out hydrogen gas?

Q.

Which of the following metals on reaction with dilute hydrochloric acid will give salt and hydrogen gas?

1. Copper

2. Gold

3. Silver

4. Aluminium

Q. What happens when dilute hydrochloric acid is added to iron filings?

1. Hydrogen gets oxidised
2. Iron gets reduced
3. Iron displaces hydrogen from hydrochloric acid
4. No reaction takes place

Q.

Name the following:

(b) A metal which does not react with dilute acids.

Q. Concentrated nitric acid renders iron passive. Give reason. [2 MARKS]

Q.

Write equation for the reaction of zinc with hydrochloric acid and balance the equation .Find out the number of molecules of hydrogen gas produced in this reaction, when 1 Mole of HCl completely reacts at S.T. P.?

Q.

Specify a metal that liberates ${\mathrm{H}}_2$ gas with dilute Nitric acid.

Q.

What happens to the rate of a reaction when the concentration of reactant is increased?

1. Rate of reaction does not depend on the concentration of reactant.

2. Rate of reaction will increase.

3. Rate of reaction will decrease.

4. Rate of reaction remains constant.

Q. why metal k should not taken with HCL acid for reaction

Q.

How is the rate of a chemical reaction affected by change in concentration of the reactants? Give an example in support of your answer.

Q.

Name the gas produced when metals react with dilute sulphuric acid.

1. Oxygen
2. Nitrogen
3. Hydrogen
4. Hydrogen sulphide

Q. How many of the following elements can react with dilute sulphuric acid?

Na, Al, K, Au, Fe, Ag, Cu

Q. The metal with does not react with hydrochloric acid is/are:

1. Zinc
2. Potassium
3. Aluminium
4. Copper

Q. What happens when dilute hydrochloric acid is added to iron filings?

1. Hydrogen gets oxidised
2. Iron gets reduced
3. Iron displaces hydrogen from hydrochloric acid
4. No reaction takes place

Q.

Which amongst the following will not displace hydrogen gas from dilute hydrochloric acid?

1. Copper

2. Magnesium

3. Zinc

4. Aluminium

Q. will react with dilute hydrochloric acid to form salt and hydrogen gas.

1. Silver
2. Aluminium
3. Gold

Q. Why copper cannot eliminate hydrogen from hydrochloric acid when copper reacts with hydrochloric acid?

Q. When metal X reacts with dilute $\text{HCl}$ then bubbles of gas Y are formed. Moreover, when this metal X reacts with cold water it will again produce this gas Y. Identify X and Y.

1. X:- Potassium, Y:- Oxygen
2. X:- Sodium, Y:- Hydrogen
3. X:- Calcium, Y:- Oxygen
4. X:- Copper, Y:- Hydrogen

Q. A metal on reaction with a dilute acid liberates gas which burns with a pop sound.

1. hydrogen
2. oxygen
3. carbon dioxide
4. carbon monoxide

Q. What is the volume ratio of nitric acid to hydrochloric acid in Aqua-regia?

1. $1HN{O}_3+3HCl$
2. $1HCl+1HN{O}_3$
3. $1HN{O}_3+2HCl$
4. $1HCl+3HN{O}_3$

Q. Choose the metals which releases hydogen gas with acids.

1. Sodium
2. Aluminium
3. Iron
4. Silver
5. Gold
6. Platinum
7. Magnesium
8. Zinc

Q. Granules of zinc react with dilute hydrochloric acid to liberate a gas that burns with the pop sound. The gas is:

1. carbon dioxide
2. hydrogen
3. carbon monoxide
4. oxygen

Q. Magnesium, aluminium or iron on reaction with dilute hydrochloric acid liberates ___ gas.

1. oxygen
2. chlorine
3. hydrogen chloride
4. hydrogen