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daser333 [38]
3 years ago
12

water is composed of two atoms of ____ and one of oxygen. question 2 options: carbon silicon nitrogen hydrogen

Chemistry
1 answer:
oee [108]3 years ago
6 0
Two atoms of hydrogen and one atom of oxygen hence the formulae H2O
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What would be the best indicator for titrating the weak base sodium bicarbonate using hcl titrant?
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The methyl orange  would be the best indicator for titrating the weak base sodium bicarbonate using HCl titrant

When weak base is titrated with strong acid then , then solution is slightly acidic at end point . If weak acid is titrated with strong base then , the solution is slightly basic because salt formed will hydrolyzed to a certain extent .

In acid base titration at the end point the amount of the acid becomes chemically equivalent to the amount of the base present .The methyl orange  would be the best indicator for titrating the weak base with strong acid .

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23 grams of Acetaminophen is equal to how many moles?
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5 0
3 years ago
Codeine C18H21NO3 is a weak organic base. A 5.0 x 10^-3 M solution of codeine has a pH of 9.95. Calculate the value of Kb for th
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Kb = 4.45\times10^{-7}\ mol/L

p^{Kb}=6.35

Explanation:

For a weak organic base, the formula to find p^{OH} is given by:

p^{OH}=p^{K_b}+\log c

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Here c= 5\times10^{-3}\ M

p^{H}=9.95\\p^{OH}=14-p^{H}=14-9.95=4.05

Substituting the above values in the formula,we get:

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