Answer:
the correct answer is b. Co2...............
Answer:
Explanation:
The weak acid HF is in solution with dissolved NaF; NaF is an ionic compound, so it will dissolve by dissociating its ions; this solution reaction is:
NaF⇒
So, initially there will be these species in solution:
-NaF
-
-
If we add HCl, which is a strong acid, it will dissociate completely (that is the characteristic of a strong acid) in ions H+ and Cl-:
HCl⇒
So, we are finally adding ions and .
We are asked which ion will react with the released by HCl acid. We should think just about the anions (negative ions) because we require an electron donor to create a bond with H+, so it won't be on solution as H+. We just have two anions in solution: and .
If bonded to it would form HCl, but we saw that HCl is a strong acid which always dissociate completely in aqueous solution; so will never bond to . Finally, can bond giving HF as a result; it is possible because HF is a weak acid, and HF can be, in fact, present in an aqueous solution; the ions will be changed to HF and the pH (which depends only on concentration) will not change.
Answer:
I think it's c I hope this helps
Answer: Triangles are the strongest shape because they have fixed angles and don't distort very easily. Much of that works because the results from the characteristics of triangles, which are the strongest of all shapes.
Explanation: Hope this helps and I can get brainliest :)
A chemical reaction (signs)
- rusting
- change in base of chemical
- for example lets say u mix two chemicals, and then it becomes a different new chemical (it changed from the inside)
a physical
- a physical reaction is outer looks not inside.
- it changes on the outside, like changing a color