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3 years ago

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Tin reacts with fluorine to form two different compounds, A and B. Compound A contains 38.5 g of tin for each 12.3 g of fluorine

. Compound B contains 56.5 g of tin for each 36.2 g of fluorine. What is the lowest whole-number mass ratio of tin that combines with a given mass of fluorine?

2 answers:

Hatshy [7]3 years ago

5 0

Tin to Fluorine mass ratios:
1) For compound A:
38.5/12.3
= 3.13
2) For compound B:
56.5/36.2
= 1.56
The lowest whole number mass ratio is 2. It cannot be 1 because it is less than that required for compound B.

tatuchka [14]3 years ago

4 0

Answer: In compound A, the mass ratio of Tin to Fluorine is 1 : 2

In compound B, the mass ratio of Tin to Fluorine is 1 : 4

Explanation: For the reaction of Tin and Fluorine, the reaction follows:

$Sn+F_2\rightarrow A+B$

To calculate the mass ratio, we simply find the mole ratio and for that we need to find the moles of Tin and fluorine respectively for each compound and then divide it by the lowest number of moles.

Molar mass Tin = 118.71g/mol

Molar mass Fluorine = 19g/mol

Formula to calculate the moles is:

$Moles=\frac{\text{Given mass}}{\text{Molar mass}}$

For Compound A:

Given mass of Tin = 38.5 g

Moles of Tin = $\frac{38.5g}{118.71g/mol}=0.324mol$

Given mass of Fluorine = 12.3 g

Moles of Fluorine = $\frac{12.3g}{19g/mol}=0.647mol$

Mole ratio of Tin is = $\frac{0.324}{0.324}=1$

Mole ratio of Fluorine = $\frac{0.647}{0.324}=1.99\approx 2$

Mass ratio of Tin and fluorine is 1 : 2. The compound formed is $SnF_2$

For Compound B:

Given mass of Tin = 56.5 g

Moles of Tin = $\frac{56.5g}{118.71g/mol}=0.475mol$

Given mass of Fluorine = 36.2 g

Moles of Fluorine = $\frac{36.2g}{19g/mol}=1.905mol$

Mole ratio of Tin is = $\frac{0.475}{0.475}=1$

Mole ratio of Fluorine = $\frac{1.905}{0.475}=4.01\approx 4$

Mass ratio of Tin and fluorine is 1 : 24 The compound formed is $SnF_4$

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Hafnium and tantalum are transition elements.

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<u>Explanation:</u>

Main group elements are the elements which belong to s block and p block. They are also known as representative elements.

S-block elements are defined as the elements whose last electron enters s-sub shell. The general electronic configuration of these elements is $ns^{1-2}$

P-block elements are defined as the elements whose last electron enters p-sub shell. The general electronic configuration of these elements is $np^{1-6}$

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As, the last electron is entering the (f subshell), it is a inner transition element.

<u>Option 3:</u> In

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As, the last electron is entering the p subshell, it is a main group element.

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