Question

Three different samples of sodium chloride were found to give the following results. Show that the given data supports the law of constant proportion.

Answer 1

There are four types of crystallinesolids: Ionic solids—Made up of positive and negative ions and held together by electrostatic attractions. They're characterized by very high melting points and brittleness and are poor conductors in the solid state. An example of an ionic solid is table salt, NaCl.

Answer 2

Answer:

Law of Constant Proportion states that no matter from which source a compound is obtained , the elements are combined together in fixed proportion by mass.

Explanation:

Given data in question:

SAMPLE 1:

Mass of NaCl = 14.75

Mass of Na = 5.80

Mass of Cl = Mass of NaCl - Mass of Na

Mass of Cl = 8.95

Ratio in which NaCl is combined = $\dfrac{5.80}{8.95}$

Ratio = $\dfrac{580}{895}$

SAMPLE 2:

Mass of NaCl = 11.32

Mass of Cl = 6.87

Mass of Na = 11.32 - 6.87 = 4.45

Ratio of Na and Cl = $\dfrac{4.45}{6.87}$

Ratio = $\dfrac{445}{687}$

SAMPLE 3:

Mass of NaCl = 7.45

Mass of Na = 2.93

Mass of Cl = 7.45 - 2.93 = 4.52

Ratio of Na and Cl = $\dfrac{2.93}{4.52}$

Ratio = $\dfrac{293}{452}$

Now we need to convert the three ratios into decimals to check whether the ratios produce same decimal or not because the fractions cannot be simplified further.

If we calculate the decimal in all the three ratios, the decimal comes out to be 0.648.

Therefore, we see that in all the three samples the ratio of Na and Cl comes out to be same or constant.

Therefore, law of constant proportion is followed.