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Alexxandr [17]
3 years ago
13

The mixing of which pair of reactants will result in a precipitation reaction? A. Ba(NO3)2(aq) + Na2CO3(aq) B. NH4Br(aq) + NH4I(

aq) C. K2SO4(aq) + Cu(NO3)2(aq) D. NaClO4(aq) + (NH4)2S(aq)
Chemistry
1 answer:
Semenov [28]3 years ago
8 0

Answer:

A. Ba(NO₃)₂(aq) + Na₂CO₃(aq)

Explanation:

  • The reaction between aqueous Ba(NO₃)₂ and Na₂CO₃ is a precipitation reaction.
  • The complete equation for the reaction is;

Ba(NO₃)₂(aq) + Na₂CO₃(aq) → BaCO₃(s) + NaNO₃(aq)

  • Barium carbonate is the precipitate formed during the reaction.
  • All nitrates are soluble in water and all salts of sodium are soluble in water, therefore, Ba(NO₃)₂, Na₂CO3, and NaNO₃ are soluble in water.
  • Precipitation reaction involves reaction of soluble salts to form a precipitate as one of the product.
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Explain the connection between periods and energy levels.
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One mole of copper(ii) sulfate, cuso4, contains ________ o atoms.
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6 0
2 years ago
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Which substance can be broken down by chemical means?
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7 0
2 years ago
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Zielflug [23.3K]

Answer : Electron P has greater energy difference than the Electron N.

Explanation :  

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The Planck's equation is,

E=\frac{h\times c}{\lambda}

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\lambda = wavelength of light

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So, Electron P which gives violet light on transition has greater energy difference than the Electron N.


6 0
2 years ago
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