MOCK-1PAPER-1 Cambridge AS
5
Two conversions are outlined below.
NH. NHS
CH → CHE
What similar feature do these two conversions have?
A alone pair of electrons in the product
B change in oxidation state of an element
c decrease in bond angle of the species involved
D disappearance of a x bond

it is a good conductor

explanation:

i'm pretty sure its b i might be wrong though!

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

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