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3 years ago

Which of these compounds is a proton acceptor ?

Chemistry

1 answer:

Vikki [24]3 years ago

5 0

Answer:

Sodium Hydroxide

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Explanation:

Sodium hydroxide is a common proton acceptor also known as lye. It is the active ingredient in oven cleaners and drain cleaners because it can react with fats to produce compounds that dissolve in water. It is also used in many school laboratories to demonstrate acid-base reactions.

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Determine the molecular formulas of these compounds:

lianna [129]

The molecular formulas of the empirical ones of P₂O₅ and CH₂O are P₄O₁₀ and C₇H₁₄O₇, respectively, knowing that their molar masses are 310 and 200.18 g/mol, respectively.

<h3>1. Molecular formula of P₂O₅</h3>

We can calculate the molecular formula as follows:

$MF = n*EF$ (1)

Where:

MF: is the molecular formula

EF: is the empirical formula

n: is an integer

To calculate the integer n, we need to use the following equation:

$n = \frac{M}{M_{EF}}$ (2)

Where:

M: is the molar mass of P₂O₅ = 310 g/mol

$M_{EF}$ : is the molar mass of the empirical formula

The molar mass of the empirical formula of P₂O₅ is given by:

$M_{EF} = 2A_{P} + 5A_{O}$

Where:

$A_{P}$ : is the atomic weight of phosphorus = 30.974 g/mol

$A_{O}$ : is the atomic weight of oxygen = 15.999 g/mol

So, the molar mass of the empirical formula of P₂O₅ is:

$M_{EF} = (2*30.974 + 5*15.999) g/mol = 141.943 g/mol$

Now, we can find the integer n (eq 2).

$n = \frac{M}{M_{EF}} = \frac{310 \:g/mol}{141.943 \:g/mol} = 2$

Finally, after multiplying the integer n by the number of atoms on the empirical formula of P₂O₅, we have (eq 1):

$MF = n*EF = 2 \times P_{2}O_{5} = P_{(2 \times 2)}O_{(5 \times 2)} = P_{4}O_{10}$

Therefore, the molecular mass of P₂O₅ is P₄O₁₀.

<h3>2. Molecular formula of CH₂O </h3>

We know:

M: molar mass of CH₂O = 200.18 g/mol

To calculate the integer n and so the molecular mass of the molecule, we need to calculate the molar mass of the empirical formula of CH₂O.

$M_{EF} = A_{C} + 2A_{H} + A_{O} = (12.011 + 2*1.008 + 15.999) g/mol = 30.026 \:g/mol$

Now, the integer n is equal to (eq 2):

$n = \frac{M}{M_{EF}} = \frac{200.18 g/mol}{30.026 g/mol} \approx 7$

Finally, the molecular formula of the molecule is (eq 1):

$MF = n*EF = 7 \times CH_{2}O = C_{(1 \times 7)}H_{(2 \times 7)}O_{(1 \times 7)} = C_{7}H_{14}O_{7}$

Therefore, the molecular formula of CH₂O is C₇H₁₄O₇.

Learn more about molecular formula here:

brainly.com/question/1247523

brainly.com/question/14327882

I hope it helps you!

4 0

3 years ago

Which statement is true about the ionic size of the elements in a group as one moves from top to bottom in that group?

nekit [7.7K]

Answer:

Ionic size increases from top to bottom within the group.

Explanation:

Ions are formed when neutral atoms of elements gain or lose electron(s).
The ionic radius is the distance from the nucleus of an ion to the outermost energy level.
The ionic size or radius increases down the group as the number of energy level increases.
Therefore, an ion of an element lower in the group will be larger than the ion of an element higher in the group.
For example, an ion of potassium, K+, is larger in size compared to the ion of sodium, Na+ since K+ has more energy levels than Na+.

8 0

4 years ago

Read 2 more answers

Which of the following is NOT a way that thermal energy is transferred?

g100num [7]

Answer:

Your answer would be D.) Convection. I hope this helps you! :)

3 0

2 years ago

Identify the type of reaction and the products. Fe(NO3)2 + Na ->

Vinvika [58]

Answer: