topi3

Question 1

Acid+ metal oxide

Answer 1

salt+ water

Question 2

Acid +metal hydroxide

Answer 2

salt+ water

Question 3

Acid +metal

Answer 3

salt+ hydrogen

Question 4

Acid +metal carbonate

Answer 4

salt+ water +carbon dioxide

Question 5

what is the difference between strong acids and concentration acids

Answer 5

Acid strength refers to how much acid ionises in water where whereas the concentration tells how much acid is present in a litre of water

Question 6

what hapens when the concentration of H+ ions increases

Answer 6

the Ph decreases

Question 7

CONCENTRATION OF H+ IONS INCREASES BY 1000, AND WHATHAPPENS TO THE PH OF THE ACID

Answer 7

IT DECRESES BY 3

Question 8

2HCL+CUO WHAT ARE THE PRODUCTS

Answer 8

CUCL+WATER

Question 9

HNO3+KOH

Answer 9

KNO3+H2

Question 10

2HCL+Na2CO3

Answer 10

2Nacl+H2O+CO2

Question 11

what makes an acid an acid

Answer 11

H+ ions

Question 12

is sodium, potassium and ammonium soluble or insoluble

Answer 12

soluble

Question 13

is nitrate soluble or insoluble

Answer 13

soluble

Question 14

is chloride soluble or insoluble

Answer 14

soluble(except for sliver chloride and lead chloride)

Question 15

is sulfate soluble or insoluble

Answer 15

soluble(except for lead, barium and calcium sulfate )

Question 16

is carbonate and hydroxide soluble or insoluble

Answer 16

insoluble(except for sodium, potassium and ammonium ones )

Question 17

explain the method of precipitation

Answer 17

Add lead nitrate to a test tube and deionised water to dissolve it. Shake it so you know it is dissolved.
Do the same with sodium chloride.
Pour the two solutions into a beaker and mix them. This should cause the lead chloride to precipitate out.
Use a filter paper and a filter funnel to filter out to separate the solid from the liquid.
Scrape the lead chloride into a fresh filter paper and dry it using an oven or a desiccator