A-Level Chemistry 1B Precipitation_1

A-Level Chemistry 1B Precipitation_1

11th Grade

16 Qs

quiz-placeholder

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A-Level Chemistry 1B Precipitation_1

A-Level Chemistry 1B Precipitation_1

Assessment

Quiz

Chemistry

11th Grade

Hard

Created by

Aishwaria Murthy

Used 1+ times

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16 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a precipitation reaction?

a) A reaction that occurs between two gases

b) A reaction that occurs in solid-state only

c) A reaction that occurs in aqueous solutions where two ionic bonds combine forming insoluble salts

d) A reaction that occurs in organic solvents

2.

DRAG AND DROP QUESTION

1 min • 1 pt

One way to test for carbon dioxide gas that's ​ (a)   is that we bubble it through lime water. ​ (b)   is an aqueous solution of calcium hydroxide ​ (c)  

So here i'm breathing through this tube and you see the bubbles coming up through the ​ (d)   solution. So let's see if i can do this all in one breathe

co2
lime water
Ca(OH)2.
calcium hydroxide
Oxygen

3.

DRAG AND DROP QUESTION

1 min • 1 pt

if I can have this carbon dioxide and calcium hydroxide react to form that ​ (a)   . if you look at the reaction, you can see we have​ (b)   ) + Ca(OH)2 (aq) →​ (c)   +H2O that's the precipitate, and eventually that's what will change the solution to the ​ (d)   and

that's the test for ​ (e)   .

milky white precipitate
CaCO2 (g
CaCO3 (s)
milky white color
carbon dioxide

4.

DROPDOWN QUESTION

1 min • 1 pt


Lead Nitrate and Potassium Iodide Precipitate reaction; gold rain experiment involves the​ (a)   between lead nitrate (Pb(NO3)2) and ​ (b)   , which results in the formation of a ​ (c)   . The term "gold rain" is often used to describe the appearance of the ​ (d)   , which has a ​ (e)   .

When lead nitrate and potassium iodide are mixed together, a double displacement reaction occurs. The lead ions (Pb2+) from lead nitrate react with the iodide ions (I-) from potassium iodide to form lead iodide (PbI2), which is insoluble in water and precipitates out. The balanced chemical equation for the reaction is as follows:

Pb(NO3)2 + 2KI → PbI2 + 2KNO3

The golden-yellow precipitate of lead iodide gives the appearance of "gold rain" when it forms in the solution. This reaction is often used as a demonstration in chemistry experiments to observe the formation of a colored precipitate.

reaction
potassium iodide (KI)
precipitate
resulting precipitate
golden-yellow color

5.

DRAG AND DROP QUESTION

1 min • 1 pt


Lead Nitrate and Potassium Iodide Precipitate reaction; gold rain experiment involves the reaction between lead nitrate (Pb(NO3)2) and potassium iodide (KI), which results in the formation of a precipitate. The term "gold rain" is often used to describe the appearance of the resulting precipitate, which has a golden-yellow color.

When ​ (a)   and potassium iodide are mixed together, a ​ (b)   occurs. The ​ (c)   (Pb2+) from lead nitrate react with the ​ (d)   (I-) from potassium iodide to form​ (e)   (PbI2), which is insoluble in water and precipitates out. The balanced chemical equation for the reaction is as follows:

Pb(NO3)2 + 2KI → PbI2 + 2KNO3

The golden-yellow precipitate of lead iodide gives the appearance of "gold rain" when it forms in the solution. This reaction is often used as a demonstration in chemistry experiments to observe the formation of a colored precipitate.


lead nitrate
double displacement reaction
lead ions
iodide ions
lead iodide

6.

DRAG AND DROP QUESTION

1 min • 1 pt

Lead Nitrate and Potassium Iodide Precipitate reaction; gold rain experiment; involves the reaction between lead nitrate (Pb(NO3)2) and potassium iodide (KI), which results in the formation of a precipitate. The term "gold rain" is often used to describe the appearance of the resulting precipitate, which has a golden-yellow color.

When lead nitrate and potassium iodide are mixed together, a double displacement reaction occurs. The lead ions (Pb2+) from lead nitrate react with the iodide ions (I-) from potassium iodide to form lead iodide (PbI2), which is insoluble in water and ​ (a)   . The balanced chemical equation for the reaction is as follows:

​ (b)   + 2KI → PbI2 + 2KNO3

The golden-yellow precipitate of​ (c)   gives the appearance of "gold rain" when it forms in the solution. This reaction is often used as a demonstration in chemistry experiments to observe the formation of a ​ (d)   .

precipitates out
Pb(NO3)2
lead iodide
colored precipitate

7.

DRAG AND DROP QUESTION

1 min • 1 pt

One way to test for ​ (a)   gas that's Co2 is we bubble it through ​ (b)   . Lime water is an ​ (c)   of calcium hydroxide ​ (d)   . So here I'm breathing through this tube and you see the ​ (e)   coming up through the calcium hydroxide solution. So let's see if I can do this all in one breath. If I can have this carbon dioxide and calcium hydroxide react to form that milky white precipitate.

carbon dioxide
lime water
aqueous solution
Ca(OH)2
bubbles

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