How can you lower the ph of the vinegar?
a. mix the vinegar with sugar to thicken it
b. boil the vinegar to concentrate it.
c. freeze the vinegar to change its state.
d. add water to the vinegar to dilute it.

What is the molar mass of a gas that has density of 2.054 g/l

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.

The sum of the oxidation numbers in a neutral compound is always