Write the name from the formula or the formula from the name for each hydrated ionic compound. a. CoSO 4 •7 H 2 O b. iridium(III) bromide tetrahydrate c. Mg(BrO 3 ) 2 •6 H 2 O d. potassium carbonate dihydrate

Hey everyone in this example, we want to name our hydrated ionic compound following here. So what we want to do is follow the exact formula where we take this ionic compound and we break into its ions or into its ion names. Now in this case we have one eye on here which we can recall as the C a two plus caddy on for calcium. Our next step is to go ahead and refer that this is the calcium ion. So now we're going to see what other ions we have present. We have a poly atomic I on here Which we can recall BRO three 1 - as the bromate an ion. Now our last step is to write out our hydrated form of our name, which is going to be coming from the water portion here that we dissolve our ionic compound in And so we should especially pay attention two. Specifically the coefficient that is in front of this water. And here in this given example we have a coefficient of one in front of water. We need to recall that the coefficient in front of water is going to equal our prefix. And so because it's a one here in this example our prefix is going to be mono. And so our next step is to go ahead and add on the hydrate ending since this is a hydrated ionic compound. So this is step one, this is step two, This is step three, We're at step four and lastly we write out step five which is adding on hydrate. And so overall what we would say is our name of this compound is calcium, bromate, mono hydrate. And so this would complete this example as our final answer for the name of our hydrated ionic compound. If you have any questions, please leave them down below and I will see everyone in the next practice video.

Ch.3 - Molecules and Compounds

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Tro 6th Edition

Ch.3 - Molecules and Compounds

Problem 51c

Chapter 3, Problem 51c

Write the name from the formula or the formula from the name for each hydrated ionic compound.
a. CoSO₄•7 H₂O
b. iridium(III) bromide tetrahydrate
c. Mg(BrO₃)₂•6 H₂O
d. potassium carbonate dihydrate

Verified step by step guidance

Identify the cation and anion in the compound. The cation is Mg^{2+} (magnesium ion) and the anion is BrO_3^{-} (bromate ion).

Determine the number of bromate ions needed to balance the charge of the magnesium ion. Since magnesium has a +2 charge and bromate has a -1 charge, two bromate ions are needed to balance the charge, resulting in Mg(BrO_3)_2.

Recognize the '6 H_2O' as indicating that the compound is a hydrate with six water molecules associated with each formula unit.

Combine the name of the ionic compound with the prefix for the number of water molecules. The prefix for six is 'hexa-', so the name of the hydrate is magnesium bromate hexahydrate.

Write the full name of the compound: Magnesium bromate hexahydrate.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Hydrated Ionic Compounds

Hydrated ionic compounds are salts that incorporate water molecules into their crystalline structure. The water molecules are typically represented in the formula as 'n H2O', where 'n' indicates the number of water molecules associated with each formula unit of the salt. Understanding hydration is crucial for identifying the physical properties and reactivity of these compounds.

Nomenclature of Ionic Compounds

The nomenclature of ionic compounds involves naming the cation (positive ion) and anion (negative ion) according to established rules. For hydrated compounds, the name includes the prefix indicating the number of water molecules, such as 'hemi-' for one-half, 'mono-' for one, 'di-' for two, and so on, followed by 'hydrate'. This systematic approach helps in accurately communicating the identity of the compound.

Chemical Formula Representation

Chemical formulas represent the composition of a compound, indicating the types and numbers of atoms present. In the case of hydrated ionic compounds, the formula includes both the ionic part and the associated water molecules, as seen in Mg(BrO3)2 · 6 H2O. Understanding how to interpret and write these formulas is essential for correctly identifying and working with chemical substances.