The characteristics of phenolphthalein that makes it appropiate for use for tritation is that phenolphthalein is colourless in acidic media but pink in basic solutions.
That means that in the equivalence point (well, just a tiny amount of the solution being added after reaching the equivalence point) the colour of the solution being tritraed will change.
If the solution being triated is an acid, it will remain colourless with the phenolphtalein, and it will turn pink at the equivalence point.
You can do experiments without phenolphthalein if you use a different indicator of pH (substances that change of color when pass from acid to basic or from basic to acid). Some other indicators of pH are methyl red, bromothymol blue and thymol blue. There are others.
Answer:
ok, maybe draw like a few plants and dear, you know and draw them out of cells, like the shape. so like a bunch of cells together making the shape of a deer or plant and stuff. i hope this helps
Explanation:
Answer is: <span>b.20.0 L </span><span>liters of ammonia are needed to react completely.
</span>V(NO) = 30 L.
n(NO) = V(NO) ÷ Vm.
n(NO) = 30 L ÷ 22,4 L/mol.
n(NO) = 1,34 mol.
From chemical reaction: n(NO) : n(NH₃) = 6 : 4 (3 : 2).
n(NH₃) = 4 · 1,34 mol ÷ 6.
n(NH₃) = 0,892 mol.
V(NH₃) = 0,892 mol · 22,4 L/mol.
V(NH₃) = 20 L.
This is a build up of lava which came out of the volcano in previous eruptions, once this lava came out of the volcano it cooled and hardened, over many eruptions layers of hardened volcanic rock will form. The layers are slanted as gravity acts on the lava so it flows down and a little further from the cone.