Acids And Bases

Question 1

What does an acid + base go to?

Answer 1

Salt + water

Question 2

What does an acid + alkali go to?

Answer 2

Salt + water

Question 3

What does an acid + metal carbonate go to?

Answer 3

Salt + water + carbon dioxide

Question 4

What does an acid + metal go to?

Answer 4

Salt + hydrogen

Question 5

What does an acid + ammonia go to?

Answer 5

Ammonium salt

Question 6

What is a salt?

Answer 6

When the H+ ions in the acid are replaced by metal ion or ammonium ion

Question 7

Practical- reaction of dilute acids with carbonates: what equipment do you need?

Answer 7

6 test tubes
Dilute HCL
Dilute sulphuric acid
Metal carbonates: CaCO3, MgCO3, CuCO3, Na2CO3
Spatial
Test tube with 3cm3 lime water
Pipette.

Question 8

Practical- reaction of dilute acids with carbonates: what is the method?

Answer 8

Take 3cm3 limewater into test tube
Add 2cm3 of HCL to a separate test tube
Add a spatula of copper carbonate to acid and quickly collect gas in a pipette
Squeeze gas into lime water
Repeat 5 more times with different acids and carbonate

Question 9

Practical- acid strength: what equipment do you need?

Answer 9

Spotting tile, 0.1mold,-3 ethnic acid
0.1 HCL
pH sticks and chart
UI solution and chart

Question 10

Practical- acid strength: what is the method?

Answer 10

Put 2 drops of ethnic acid into one of the dimples in spotting tile
Dip pH strip into solution and estimate pH using the chart
Add one drop of UI solution to a beaker.
Use chart to estimate pH
Repeat with HCL