All categories

4 years ago

Which of the following is a correct formula unit of an ionic compound?

Chemistry

2 answers:

goldenfox [79]4 years ago

6 0

Answer : The correct formula unit of an ionic compound is Ca(OH)2

Explanation :

An ionic compound is formed when a metal atom donates one or more electrons to a non metal atom.

During this process, metal gains a positive charge and a nonmetal gets a negative charge.

In an ionic compound, these charges on the ions are balanced so that the overall compound is neutral.

Let us check which of the given compounds have a neutral charge.

1) Al2F3 : Charge on Al is +3 and that on F is -1.

The total charge on 2 Al is 2x3 = +6.

The total charge on 3 F atoms is 3x(-1) = -3

The overall charge on the compound is +6-3 = +3.

That means the given formula unit is not correct.

2) Ca2O : Charge on Ca is +2 and that on O is -2

Total charge on Ca is 2x2 = +4

The overall charge is +4-2 = +2

Therefore the given formula unit is not correct.

3) Ca(OH)2 : The charge on Ca ion is +2 and that on OH is -1.

The total charge on 2 OH ions is 2x(-1) = -2

The overall charge is +2-2 = 0

This gives a neutral compound.

Therefore the given formula unit is correct.

scoray [572]4 years ago

4 0

The answer is C)

Ca(OH)2

I took the test and it was correct

You might be interested in

suppose you mix two colorless liquids together and a green solid settles to the bottom of the container. explain why you might b

Andrew [12]

Because a unexpected color change has taken place also a precipitate was formed

6 0

3 years ago

How many grams of C3H5(OH)3 are needed for every 325 moles of KMnO4?

Phoenix [80]

670 is needed for the total

6 0

3 years ago

Dehydrohalogenation of 1-chloro-1-methylcyclopropane affords two alkenes (A and B) as products.

UNO [17]

Explanation:

Dehydrohalogenation reactions occurs as elimination reactions through the following mechanism:

Step 1: A strong base(usually KOH) removes a slightly acidic hydrogen proton from the alkyl halide.

Step 2: The electrons from the broken hydrogen‐carbon bond are attracted toward the slightly positive carbon (carbocation) atom attached to the chlorine atom. As these electrons approach the second carbon, the halogen atom breaks free.

However, elimination will be slower in the exit of Hydrogen atom at the C2 and C3 because of the steric hindrance by the methyl group.

Elimination of the hydrogen from the methyl group is easier.

Thus, the major product will A

4 0

3 years ago

Which gas is not a significant contributor to greenhouse gasses.?

Tresset [83]

Answer:

C. Methane.

Explanation:

Methane is a chemical that can kill you. A, B and D all won't kill you because that is a significant contributor to greenhouse gasses.

hope this helped.

8 0

2 years ago

A mixture of propane and butane is fed into a furnace where it is mixed with air. The furnace exhaust leaves the furnace at 337�

vagabundo [1.1K]

Answer:

1. 3.29mol

2. 0.125molH2o/mol

3. 52.5'C

Explanation: The step by step explanation are attached to the answer.

7 0

3 years ago

Read 2 more answers