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a) What ratio of CH3COO/CH3COOH does she need?
b) How could she mix 0.100 M CH3COOH and 0.100 M NaCH3COO to make this buffer?
c) How could she make this buffer using 0.100 M CH3COOH and 0.100 M NaOH?
d) Name another buffer system she could use.
Find the pH of the following solutions:
a) 0.010 moles HCl in 10.0 liters water.
b) 6.0 g NaOH dissolved in 15.0 liters water.
c) 5.0 ml 0.40 M HBr diluted to 20.0 liters with water.
d) 0.10 M solution of benzoic acid.
e) 0.20 M NaClO.
f) 0.20 moles HCl plus 0.10 moles KOH dissolved in 1.0 liter water.
a) Write the balanced chemical equation.
b) Determine the limiting reagent.
c) What mass of precipitate could form?
What is the maximum mass of ethane (C₂H₄) that can react with 100.0dm3 of oxygen in a combustion reaction? (Assume STP Condition)
This is an example in a book, I have an exam tomorrow and I am revising and there are no steps for this example, just question and answer.
I know ethane is C2H6, not C2H4, still, the answer below this example was 42.7g.
How is the answer 42.7g? ( please show with steps)
I know how to solve this with other elements and other ones of this kind of exercises, but I don't know how the answer to this is 42.7g and not something else I got.
Thanks in advance.
1.00 g of an unknown solid mixture
9 mmol of acid in their sample.
Student drawer contents
Small filter flasks
20 mL Dichloromethane
I just need to know how to set up the experiment?
1.5 M NaOH
6 M HCl
95 % Ethanol