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zepelin [54]
1 year ago
8

Please answer this.A) ____ N2 + ____ H2 → ____ NH3B) ____ KClO3 → ____ KCl + ____ O2C) ____ NaCl + ____ F2 → ____ NaF + ____ Cl2

D) ____ C8H18 + ____ O2 → ____ CO2 + ____ H2OE) ____ FeCl3 + ____ NaOH → ____ Fe(OH)3 + ____NaClF) ____ P + ____O2 → ____P2O5G) ____ Na + ____ H2O → ____ NaOH + ____H2H) ____ H2SO4 + ____ Ba(NO3)2 → ____ HNO3 + ____ BaSO4How many decomposition reactions are there in the set of reactions above?

Chemistry
1 answer:
Lady_Fox [76]1 year ago
8 0

1) Decomposition reactions. In this type of reaction, a compound is broken down into simpler compounds.

AB\rightarrow A+B

Option B is a decomposition reaction

B) ____ KClO3 → ____ KCl + ____ O2

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3 years ago
A chemist dissolves 867. mg of pure barium hydroxide in enough water to make up 170. mL of solution. Calculate the pH of the sol
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Answer: The pH of the solution is 11.2

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n\times 1000}{V_s}

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n = moles of solute

V_s = volume of solution in ml

moles of Ba(OH)_2 = \frac{\text {given mass}}{\text {Molar mass}}=\frac{0.867g}{171g/mol}=0.00507mol         (1g=1000mg)

Now put all the given values in the formula of molality, we get

Molarity=\frac{0.00507\times 1000}{170}

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pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

pOH=-\log [OH^-]

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According to stoichiometry,

1 mole of Ba(OH)_2 gives 2 mole of OH^-

Thus 0.0298 moles of Ba(OH)_2 gives =\frac{2}{1}\times 0.0298=0.0596 moles of OH^-

Putting in the values:

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