Properties of Acids

Which of the following will give a colourless gas that burns with pop sound on reaction with dilute $\mathrm{HCl}$?

What will be the products when an acid reacts with metals?

What happens when dilute Hydrochloric acid is added to iron filings?

The reaction of active metals with dilute HCl leads to the evolution of a gas, which

Which of the following has calcium carbonate as its component?

Select which of the following gases is evolved when dilute hydrochloric acid reacts with zinc sulphide.

Iman and Arianna were given four different powders. They had to design a way of finding out if the powders were metals, carbonates or neither. 
Here is their plan: 
A: Add one spatula of powder to a test tube. 
B: Add $5 {\mathrm{cm}}^3$ of hydrochloric acid to the test tube. 
C: Fit a bung loosely on top of the test tube. 
D: If the powder bubbles, remove the bung and hold a lighted splint close to the top of the tube. 
E: Repeat steps A and B. Fit a bung with a delivery tube into the test tube — put the other end of the delivery tube into a test tube of limewater. 

Here are their results:

Which of the following are powders of metal?

Iman and Arianna were given four different powders. They had to design a way of finding out if the powders were metals, carbonates or neither. 
Here is their plan: 
A: Add one spatula of powder to a test tube. 
B: Add $5 {\mathrm{cm}}^3$ of hydrochloric acid to the test tube. 
C: Fit a bung loosely on top of the test tube. 
D: If the powder bubbles, remove the bung and hold a lighted splint close to the top of the tube. 
E: Repeat steps A and B. Fit a bung with a delivery tube into the test tube — put the other end of the delivery tube into a test tube of limewater. 

Here are their results:

What can be said about powder 4?

When sodium or potassium nitrate is heated with concentrated sulphuric acid, vapours of _____ acid are evolved.

Explain the reaction when nitrates are heated with concentrated sulphuric acid.

Which gas will produce in the reaction of sodium chloride and concentrated sulphuric acid? 

Explain the reaction when chloride reacts with concentrated sulphuric acid.

Give the chemical reaction of decomposition of sulphides.

${\mathrm{SO}}_2$ gas is liberated when dilute acid reacts with metal sulphides

_____ gas is liberated when dilute acid reacts with metal sulphides.

$\mathrm{A}$: ${\mathrm{H}}_2$

$\mathrm{B}$: ${\mathrm{H}}_2\mathrm{S}$

$\mathrm{C}$: ${\mathrm{SO}}_3$

Enter your correct answer as $\mathrm{A}, \mathrm{B},$ or $\mathrm{C}$.

Explain the reaction between dilute acids with metal sulphides.

_____ gas is liberated when bisulphites and sulphites are decomposed by dilute acids.

Which gas is liberated when bisulphites and sulphites are decomposed by dilute acids?

Explain the reaction between dilute sulphuric acid and sodium sulphite.

Write down the reaction that takes place between sodium bisulphite reacts with an acid.