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3 years ago

Match the term with its description.

Chemistry

2 answers:

Ilia_Sergeevich [38]3 years ago

8 0

pH(D) A compound that increases the hydroxide ions (OH-) when it is dissolved in a solution

Inga [223]3 years ago

3 0

Answer:

Acid-A compound that increases hydrogen ions (H+) when it is

Base-A compound that increases the hydroxide ions (OH−) when it is dissolved in a solution

Ions- An atom or molecule that has a positive or negative charge

pH-A value from 0 to 14 that is used to specify how acidic or basic a compound is when it is dissolved in water

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Balance the equation by inserting coefficients as needed. equation: ZnS + HBr -> ZnBr_{2} + H_{2}S ZnS + HBr ⟶ ZnBr 2 + H 2 S

yawa3891 [41]

Answer : The balanced chemical reaction will be,

$ZnS+2HBr\rightarrow ZnBr_2+H_2S$

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

If the amount of atoms of each type on the left and right sides of a reaction differs then to balance the equation by adding coefficient in the front of the elements or molecule or compound in the chemical equation.

The coefficient tell us about that how many molecules or atoms present in the chemical equation.

The given chemical reaction is,

$ZnS+HBr\rightarrow ZnBr_2+H_2S$

This reaction is an unbalanced chemical reaction because in this reaction number of hydrogen bromine atoms are not balanced.

In order to balance the chemical equation, the coefficient '2' put before the $HBr$ and we get the balanced chemical equation.

The balanced chemical reaction will be,

$ZnS+2HBr\rightarrow ZnBr_2+H_2S$

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