Test 1- Q5a

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Brandon Tao 1K
Posts: 100
Joined: Sat Aug 17, 2019 12:15 am

Test 1- Q5a

Postby Brandon Tao 1K » Sun Oct 20, 2019 9:48 pm

Can someone please explain 5a on the first test? I used the equation M=mols/volume but got .05M.

Akshay Chellappa 1H
Posts: 59
Joined: Wed Sep 11, 2019 12:15 am

Re: Test 1- Q5a

Postby Akshay Chellappa 1H » Sun Oct 20, 2019 9:55 pm

The steps for solving 5a were:
1). Convert the grams of aspirin provided, in my case it was 12.0g but I think the tests were different for each discussion, to moles by dividing by the molar mass.
2). Convert the mL of of ethanol provided to L by dividing by 1000.
3). Finding the molarity by diving the moles of aspirin by the liters of ethanol

Posts: 55
Joined: Fri Sep 20, 2019 12:17 am

Re: Test 1- Q5a

Postby kpang_4H » Sun Oct 20, 2019 9:55 pm

the equation you used was right, but you may have messed up when you plugged in the values. I did 10g/194.19g.mol^-1 divided by .240 L and got .215M.

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