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

Question

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

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

So what does it mean to buffer?

anonymous · Answer

To buffer means to maintain a certain ph level .

anonymous · Answer

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 .

anonymous · Answer

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

anonymous · Answer

Thats it exactly , spot on .

anonymous · Answer

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

anonymous · Answer

Oh okay I get it now(:

anonymous · Answer

Good stuff