Question

Which of these substances acts as a buffer?
blood
lemon juice
curd

Answer 1

I think lemon juice is because it's so acidic. I'm not sure what curd is though...

Answer 2

It's blood , it has to stay at a constant level of ph 7.7 or we can't survive .

Sorry to contradict .

Answer 3

So what does it mean to buffer?

Answer 4

To buffer means to maintain a certain ph level .

Answer 5

Buffers are used in all sorts of stuff , like anything advetized as ph balanced ( conditoner , face wash ) and its done by adding a weak acid and it's conjugate base ,that act to keep the ph in a certain range .

Answer 6

so wouldn't high acids balance out low acids or something...

Answer 7

Thats it exactly , spot on .

Answer 8

oh but it's not strong acids but weak acids in buffers

Answer 9

Oh okay I get it now(:

Answer 10

Good stuff