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General Chemical Issues Trivia Quiz

The quiz contains some general chemistry facts questions.

A multiple-choice quiz by and762. Estimated time: 6 mins.

Author
and762

Time
6 mins

Type
Multiple Choice

Quiz #
111,413

Updated
Dec 03 21

# Qns
10

Difficulty
Very Difficult

Avg Score
4 / 10

Plays
1485

Last 3 plays: Luckycharm60 (9/10), vlk56pa (10/10), DeepHistory (10/10).

One at a Time - Single Page - Timed Game

Question 1 of 10

1. Given the reaction A ----> products , governed by the rate law v = k*[A] , which of the following statements are true ?

1. k will increase when adding a catalytic agent
2. k will increase with temperature
3. [A] will increase when adding a catalytic agent
4. No matter the catalytic agent, v will stay the same
Hint

1 + 3

1 + 2

2 + 4

1 + 2 + 3

NEXT>

Question 2 of 10

2. In metallic carbonyls, CO bonds to the metal through the oxygen atom.

True

False

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Question 3 of 10

3. Write the formula of a compound which in oxygen's oxidation state is +2.

Answer: (electronegativity!!!)

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Question 4 of 10

4. When NaClO reacts with ammonia, this product is formed. Hint

NH4Cl

NH2Cl

NH4OH

NH2OH

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Question 5 of 10

5. Consider the hydrated species M(H2O)x , where M is an alkaline metal. x will have the maximum value for : Hint

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Question 6 of 10

6. Given the planar P-N cyclic compound, P3N3Cl6 (3 nitrogen and phosphorus atoms, 6 chlorine atoms), when substituting 4 chlorine atoms with fluorine atoms, how many isomers can form ? Hint

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Question 7 of 10

7. Consider a series of complex compounds of Pt(IV), containing 1 Pt atom, X chlorine ions and (6-X) ammonia molecules. One of these compounds has zero electrical conductivity. For that compound, X equals : Hint

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Question 8 of 10

8. A 0.1 mole/L solution of a very strong acid (HA) is heated(consider the acid 100% dissociated). The pH and pOH values for this solution vary as follows : Hint

pH increases ; pOH stays the same.

pH stays the same ; pOH increases.

pH decreases ; pOH stays the same.

pH stays the same ; pOH decreases.

NEXT>

Question 9 of 10

9. Aqueous H2S solutions can have higher pH values than aqueous HCl solutions.

True

False

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Question 10 of 10

10. The color of an aqueous CuSO4 solution is given by the Cu(II) ion.

True

False

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Most Recent Scores

Dec 20 2024 : Luckycharm60: 9/10
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Quiz Answer Key and Fun Facts

1. Given the reaction A ----> products , governed by the rate law v = k*[A] , which of the following statements are true ? 1. k will increase when adding a catalytic agent 2. k will increase with temperature 3. [A] will increase when adding a catalytic agent 4. No matter the catalytic agent, v will stay the same

Answer: 1 + 2

k = A*exp(-E/RT) , where A is the Arrhenius constant for the given reaction, and E is the activation energy. If either E decreases or T increases, k will increase. When adding a catalytic agent, E decreases, thus k will increase. [A] will do nothing but decrease with time, no matter the temperature.

2. In metallic carbonyls, CO bonds to the metal through the oxygen atom.

Answer: False

In the CO molecule, O already 'gives' electrons to the C atom so it can't bond to the metal atom. CO will bond to the metal atom though the carbon atom.

3. Write the formula of a compound which in oxygen's oxidation state is +2.

Answer: F2O

F has higher electro negativity than O, thus it will be assigned the negative oxidation state.

4. When NaClO reacts with ammonia, this product is formed.

Answer: NH2Cl

The chemical reaction that takes place is NaClO + NH3 = NaOH + NH2Cl.

5. Consider the hydrated species M(H2O)x , where M is an alkaline metal. x will have the maximum value for :

Answer: Li

Since Li ion is very small, the density of the positive charge is very large; the ion 'needs' to 'enlarge' its size, thus it will surrounded by a larger number of water molecules.

6. Given the planar P-N cyclic compound, P3N3Cl6 (3 nitrogen and phosphorus atoms, 6 chlorine atoms), when substituting 4 chlorine atoms with fluorine atoms, how many isomers can form ?

Answer: 3

1st isomer - both Cl atoms at same P atom.
2nd isomer - one Cl atom at one P atom, the other at another P atom, on same side of the planar cycle.
3rd isomer - one Cl atom at one P atom, the other at another P atom, on different sides of the planar cycle.

Answer: 4

The compound is [Pt(NH3)2Cl4].

8. A 0.1 mole/L solution of a very strong acid (HA) is heated(consider the acid 100% dissociated). The pH and pOH values for this solution vary as follows :

Answer: pH stays the same ; pOH decreases.

The pH of a solution does only depend on the [H+] in the solution. But pOH = -lg([H+]*[HO-]) - pH. At standard temperature, pOH = 14 - pH. But the water ionic product [H+]*[HO-] increases with temperature.
Thus, -lg([H+]*[OH-]) will decrease with temperature, and so will the pOH value.

9. Aqueous H2S solutions can have higher pH values than aqueous HCl solutions.

Answer: True

it depends on the concentration :)

10. The color of an aqueous CuSO4 solution is given by the Cu(II) ion.

Answer: False

The color is caused by the presence of the [Cu(H2O)4]++ ion.

Source: Author and762

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