Chemical Equations (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
In a chemical equation, where are the reactants positioned?
In a chemical equation, where are the reactants positioned?
On the left side
What does the arrow () in a chemical equation indicate?
What does the arrow () in a chemical equation indicate?
Direction of reaction
Which law is obeyed when balancing chemical equations?
Which law is obeyed when balancing chemical equations?
Law of conservation of mass
What do you adjust to balance a chemical equation?
What do you adjust to balance a chemical equation?
Coefficients
In redox reactions, what happens when a species is oxidised?
In redox reactions, what happens when a species is oxidised?
It loses electrons
In redox reactions, what happens when a species is reduced?
In redox reactions, what happens when a species is reduced?
It gains electrons
What formula calculates moles from mass?
What formula calculates moles from mass?
What is the molar mass of in g/mol?
What is the molar mass of in g/mol?
2
For , how many grams of water form from 4 g of ?
For , how many grams of water form from 4 g of ?
36 g
What is the limiting reactant in a chemical reaction?
What is the limiting reactant in a chemical reaction?
Reactant that runs out first
For , with 10 g and 100 g , which is the limiting reactant?
For , with 10 g and 100 g , which is the limiting reactant?
If theoretical yield is 36 g but actual yield is 30 g, what is the percentage yield?
If theoretical yield is 36 g but actual yield is 30 g, what is the percentage yield?
83.3%