Chem problem. Help.

[Trunks9807]

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I need help with the explanation to some problem. I'm not sure if the answer key is wrong or not.

1. What is the pH of a 0.1 M NaCl solution?

I answered 7, but the key said 2 and justified as "NaCl is a neutral salt"...


2. the rate of a reaction is given as rate = k [A]^2. if B is tripled and A stayed the same, what would be the effect?

I answered it as there would be an increase in the rate by ninefold. wrong?

 

[b1234]

I need help with the explanation to some problem. I'm not sure if the answer key is wrong or not.

1. What is the pH of a 0.1 M NaCl solution?

I answered 7, but the key said 2 and justified as "NaCl is a neutral salt"...


2. the rate of a reaction is given as rate = k [A]^2. if B is tripled and A stayed the same, what would be the effect?

I answered it as there would be an increase in the rate by ninefold. wrong?

you are correct on both.

NaCl is a neutral salt and therefore the pH would be 7 - the 2 must just be a misprint.

 

[Trunks9807]

Thanks for clearing that up.

Hopefully others will post problems they have here so we can all help each other.🙂

 

[rxlea]

Homework help type threads/posts are not what SDN is for.

 

[Trunks9807]

Homework help type threads/posts are not what SDN is for.

Oh sorry. I am no longer a student studying for the pcat and I didn't know where else to ask for help. I didn't know it was against sdn rules...

 

[rxlea]

Oh sorry. I am no longer a student studying for the pcat and I didn't know where else to ask for help. I didn't know it was against sdn rules...

No worries. Maybe you can ask to see if anybody knows of any online study resources for chemistry. They can point you in the right direction 🙂