Balancing Chemical Equations with Phosphates

The video tutorial explains how to balance a chemical equation involving lithium and phosphoric acid. It begins by counting atoms and using a trick to simplify the process by treating the phosphate ion as a single unit. The tutorial then demonstrates balancing the equation by adjusting coefficients, focusing on phosphates first, followed by lithium and hydrogen. Key tips include leaving elements that appear alone until last and understanding the states of matter for each component. The video concludes with a summary of the balanced equation and thanks viewers for watching.

What is the first step in balancing the equation for lithium and phosphoric acid?

• Count the atoms of each element.

• Add water to the equation.

• Balance the equation by trial and error.

• Double the coefficients of all compounds.

Why is it beneficial to treat the phosphate ion as a single unit when balancing?

• It changes the chemical properties.

• It simplifies the counting process.

• It reduces the number of steps required.

• It increases the reaction rate.

What is the purpose of doubling the H3PO4 in the equation?

• To change the state of matter.

• To balance the lithium atoms.

• To increase the reaction speed.

• To balance the hydrogen atoms.

How do you ensure the phosphates are balanced in the equation?

• By changing the state of phosphoric acid.

• By adjusting the coefficient of lithium phosphate.

• By adding more lithium.

• By increasing the temperature.

What is the final step in balancing the lithium atoms?

• Adjust the coefficient of lithium to match the number of lithium atoms needed.

• Add more phosphoric acid.

• Change the state of lithium.

• Remove excess hydrogen.

Why should lithium and hydrogen be left to balance last?

• They are the least important elements.

• They are the most reactive elements.

• They are already balanced.

• They are isolated elements and do not affect other elements.

What is a key strategy for balancing equations with polyatomic ions?

• Change their state of matter.

• Balance them first.

• Ignore them until the end.

• Treat them as a single unit.

What is the state of lithium in the balanced equation?

• Gas

• Liquid

• Aqueous

• Solid

What is the state of phosphoric acid in the balanced equation?

• Plasma

• Gas

• Solid

• Aqueous

What is the state of lithium phosphate in the balanced equation?

• Gas

• Aqueous

• Solid

• Liquid