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Tju [1.3M]
3 years ago
12

The correctly balanced equation for H2O2 → H2O + O2 is A) H2O2 → 2H2O + O2 B) H2O2 → H2O + 2O2 C) 2H2O2 → 4H2O + O2 D) 2H2O2 → 2

H2O + O2
Chemistry
1 answer:
miss Akunina [59]3 years ago
4 0

Answer : The correct option is, (D) 2H_2O_2\rightarrow 2H_2O+O_2

Explanation :

Balanced chemical equation : According to the law of conservation of matter, the number of individual elements present on the reactant side must be equal to the number of individual elements present of product side.

The given balanced chemical reaction will be,

2H_2O_2\rightarrow 2H_2O+O_2

Hence, the correct balanced chemical reaction is, (D) 2H_2O_2\rightarrow 2H_2O+O_2

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A stock solution of HNO3 is prepared and found to contain 13.5 M of HNO3. If 25.0 mL of the stock solution is diluted to a final
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Answer : The correct option is, (C) 0.675 M

Explanation :

Using neutralization law,

M_1V_1=M_2V_2

where,

M_1 = concentration of HNO_3 = 13.5 M

M_2 = concentration of diluted solution = ?

V_1 = volume of HNO_3 = 25.0 ml  = 0.0250 L

conversion used : (1 L = 1000 mL)

V_2 = volume of diluted solution = 0.500 L

Now put all the given values in the above law, we get the concentration of the diluted solution.

13.5M\times 0.0250L=M_2\times 0.500L

M_2=0.675M

Therefore, the concentration of the diluted solution is 0.675 M

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