why is the melting point of calcium sulfate high

4

The lead up to this question was about the trend in solubility of group 2 sulfates from Mg to Ba

Reply 1

3

Calcium is a metal, sulfur is not, thus ionic bonds form creating a giant ionic lattice.

They will want you to say something like: "Strong electrostatic forces of attraction between positive and negative ions, which require a large amount of energy to overcome."

(edited 7 years ago)

Reply 2

Asquared0

Where did you get this question

Reply 3

eznot

12

This is from aqa specimen set 2 paper 1
The answer to the question is:
- Strong attraction
- Between positive and negative ions

Original post by Asquared0

Where did you get this question

Reply 4

8dlitee

1

Original post by eznot

This is from aqa specimen set 2 paper 1
The answer to the question is:
- Strong attraction
- Between positive and negative ions

Does it have to be in this order 😭

Reply 5

dbhc2411

13

Original post by 8dlitee

Does it have to be in this order 😭

It makes sense for it to be in that order:
"Strong electrostatic attraction between positively and negatively charged ions"
vs:
"Positively and negatively charged ions experience strong electrostatic attraction" sounds a bit weak.

If you're worrying about the order, don't, I'd instead suggest to really understand what's going on with ionic bonding then it'll come naturally.

Reply 6

8dlitee

1

Original post by dbhc2411

It makes sense for it to be in that order:
"Strong electrostatic attraction between positively and negatively charged ions"
vs:
"Positively and negatively charged ions experience strong electrostatic attraction" sounds a bit weak.

If you're worrying about the order, don't, I'd instead suggest to really understand what's going on with ionic bonding then it'll come naturally.

much appreciated 🤝

why is the melting point of calcium sulfate high

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