Question Video: Determining Which Chemicals Will Provide the Important Elements for Plant Growth | Nagwa Question Video: Determining Which Chemicals Will Provide the Important Elements for Plant Growth | Nagwa

Question Video: Determining Which Chemicals Will Provide the Important Elements for Plant Growth Chemistry • Second Year of Secondary School

Join Nagwa Classes

Attend live Chemistry sessions on Nagwa Classes to learn more about this topic from an expert teacher!

Which pair of compounds from the following chemicals could be added to (NH₄)₂SO₄ to make a fertilizer that provides soil with the three elements required for plant growth? [A] K₂SO₄ and Na₃PO₄ [B] KNO₃ and Na₂SO₄ [C] NaCl and CaHPO₄ [D] NH₄Cl and Na₂HPO₄ [E] Ca(NO₃)₂ and NH₄Cl

02:23

Video Transcript

Which pair of compounds from the following chemicals could be added to (NH4)2SO4 to make a fertilizer that provides soil with the three elements required for plant growth? (A) K2SO4 and Na3PO4, (B) KNO3 and Na2SO4, (C) NaCl and CaHPO4, (D) NH4Cl and Na2HPO4, (E) Ca(NO3)2 and NH4Cl.

Plants require specific nutrients to grow, just like animals do. There’s many different elements plants need for healthy growth. But the three elements plants often can’t get except through fertilization are nitrogen, phosphorus, and potassium. Nitrogen is required for the production of amino acids and therefore proteins. Phosphorus is needed to make adenosine triphosphate, or ATP, which is important for cellular energy. Potassium aids in the transportation of nutrients throughout the plant.

Since nitrogen, phosphorus, and potassium are so important for plant growth, we often want to add these three elements via fertilization. Fertilizers that contain all three of these elements are called NPK fertilizers. In this question, we are fertilizing a plant with ammonium sulfate. Ammonium sulfate contains the element nitrogen. But it doesn’t have any phosphorus or potassium. We need to figure out which chemicals we can add to ammonium sulfate to make a fertilizer that has all three of the important elements required for plant growth.

Since ammonium sulfate already has nitrogen in it, we need to find chemicals that will add phosphorus and potassium. We can go through each of the chemicals in our answer choices to see which contain phosphorus and which contain potassium. We can see that the only combination of chemicals that has both phosphorus and potassium is answer choice (A), potassium sulfate and sodium phosphate.

So the correct answer here is answer choice (A). If we add K2SO4 and Na3PO4 to (NH4)2SO4, we’ll have a fertilizer that provides the soil with nitrogen, phosphorus, and potassium, the three elements required for plant growth.

Join Nagwa Classes

Attend live sessions on Nagwa Classes to boost your learning with guidance and advice from an expert teacher!

  • Interactive Sessions
  • Chat & Messaging
  • Realistic Exam Questions

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy