3 years ago

Question 21 of 25

Chemistry

1 answer:

RideAnS [48]3 years ago

7 0

Answer:

Explanation:

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Water is said to be a good solvent for polar solutes because it has a negative end and a positive end. This explains why (IONIC/

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KOH + H3 PO4+K3 PO4+H2O

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The balanced reaction would be:

H3PO4+3KOH==>K3PO4+3H2O

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2 years ago

In a certain industrial process involving a heterogeneous catalyst, the volume of the catalyst (in the shape of a sphere) is 10.

mamaluj [8]

Answer:

Explanation:

We know that the

reaction catalyzing power of a catalyst ∝ surface area exposed by it

Given

volume V1= 10 cm^3

⇒ $\frac{4}{3} \pi r^3= 10$

hence r= 1.545 cm

also, surface area S1= $4\pi r^2$

now when the sphere is broken down into 8 smaller spheres

S2= 8×4πr'^2

now, equating V1 and V2 ( as the volume must remain same )

$\frac{4}{3}\pi r^3=8\times\frac{4}{3} \pi r'^3$

and solving we get

r'= r/2

therefore, S2= $8\times4\pi\frac{r}{2}^2$

S2= $2\times4\pi r^2$

S2= 2S1

hence the correct answer is

. The second run has twice the surface area.

8 0

3 years ago