3 years ago

Which process releases the most heat?

Chemistry

2 answers:

yaroslaw [1]3 years ago

8 0

Answer:

the boiling of 10g of liquid water

vlada-n [284]3 years ago

3 0

Answer:

The correct option is "the condensation of 10 g of gaseous water"

Explanation:

In condensation,gaseous stats is changes into liquid. So it will release more energy to convert from one state to another state.So it is exothermic process in which heat is released.

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3 years ago

An aqueous solution of calcium hydroxide is standardized by titration with a 0.120 M solution of hydrobromic acid. If 16.5 mL of

Artist 52 [7]

<u>Answer:</u> The molarity of calcium hydroxide in the solution is 0.1 M

<u>Explanation:</u>

To calculate the concentration of base, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $HBr$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is $Ca(OH)_2$

We are given:

$n_1=1\\M_1=0.120M\\V_1=27.5mL\\n_2=2\\M_2=?M\\V_2=16.5mL$

Putting values in above equation, we get:

$1\times 0.120\times 27.5=2\times M_2\times 16.5\\\\M_2=0.1M$

Hence, the molarity of $Ca(OH)_2$ in the solution is 0.1 M.

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