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3 years ago

Which compound, feco3 or pbbr2 is more soluble in acid than in base? why?

Chemistry

2 answers:

mario62 [17]3 years ago

8 0

Answer:FeCO3

Explanation:

Iron II carbonate dissolves in acid more easily because the Fe2+ will form complexes that are more stable in acidic media. In basic media, the iron II ion will precipitate from solution at high pH. Lead II ion is amphoteric and can dissolve both in acidic and basic media alike. Hence Fe2+ is more soluble in acidic media than in basic media.

VikaD [51]3 years ago

3 0

The compound FECO3 is more soluble in acid than in base because it is insoluble when put in water and also it has the boiling point of 632.48 Fahrenheit. The color of FECO3 is white and it is a crystal type element.

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Acetone is one of the most important solvents in organic chemistry. It is used to dissolve everything from fats and waxes to air

Yanka [14]

Answer: a. 79.6 s

b. 44.3 s

c. 191 s

Explanation:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process

a) for completion of half life:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

$t_{\frac{1}{2}}=\frac{0.693}{k}$

$t_{\frac{1}{2}}=\frac{0.693}{8.7\times 10^{-3}s^{-1}}=79.6s$

b) for completion of 32% of reaction

$t=\frac{2.303}{k}\log\frac{100}{100-32}$

$t=\frac{2.303}{8.7\times 10^{-3}}\log\frac{100}{68}$

$t=44.3s$

c) for completion of 81 % of reaction

$t=\frac{2.303}{k}\log\frac{100}{100-81}$

$t=\frac{2.303}{8.7\times 10^{-3}}\log\frac{100}{19}$

$t=191s$

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