Word Equation

Q.

Write the equation for the reaction of dilute nitric acid with copper?

Q.

What happens when a piece of aluminum metal is added to dilute hydrochloric acid? Also, write the balanced chemical equation if the reaction occurs.

Q.

When dilute sulphuric acid reacts with iron sulphide, the gas evolved is ………..

1. Hydrogen sulphide

2. Sulphur dioxide

3. Sulphur trioxide

4. Vapour of Sulphuric acid

Q.

New substances formed in a chemical reaction ___________________.

Q.

what happens when an Iron strip is placed in zinc sulphate solution?

Q.

Write word equations and then balanced equations for the reaction taking place when (b) Dilute hydrochloric acid reacts with magnesium ribbon.

Q. What is a word equation?

Q. The characteristic(s) observed during the reaction between iron sulphate and zinc is/are:

1. colour change
2. formation of a precipitate
3. absorption of heat
4. evolution of heat

Q. Representation of a chemical reaction using the names of the reactants and products is called ____.

1. skeletal equation
2. balanced chemical reaction
3. unbalanced chemical reaction
4. word equation

Q.

70. Give the chemical properties of acids and bases by giving balanced chemical equation.

Q. (a) A dilute acid B does not normally give hydrogen when reacted with metals but gives a gas when reacted with copper. Identify B. Write equation with copper.
(b) Complete the table :
$\begin{array}{cccc}NameofProcess& Inputs& Equations& Output\\ & Ammonia& & Nitric\\ & +Air& & acid\end{array}$
(c) What is the property of nirtic acid which allows it to react with copper? [5 MARKS]

Q.

Question 5(d)
Write word equations and then balanced equations for the reaction taking place when:
(d) Dilute hydrochloric acid reacts with iron filings

Q. Question 38
A gas is evolved when ethanol reacts with sodium. Name the gas evolved and also write the balanced chemical equation of the reaction involved.

Q. Question 5(a)
Write word equations and then balanced equations for the reaction taking place when:
(a) Dilute sulphuric acid reacts with zinc granules

Q. Reactants are written on the left hand side of a word equation.

1. True
2. False

Q. Question 5(b)
Write word equations and then balanced equations for the reaction taking place when:
(b) Dilute hydrochloric acid reacts with magnesium ribbon

Q.

Name a gas which is always produced when a reactive metal reacts with a dilute acid. Write a chemical equation supporting your answer.

Q. We cannot create fire with the help of a wood in the absence of oxygen.

1. True
2. False

Q. Question 5(c)
Write word equations and then balanced equations for the reaction taking place when –
(c) Dilute sulphuric acid reacts with aluminium powder.

Q.

What happens when a piece of aluminium metal is added to dilute hydrochloric acid?
Also, write the balanced chemical equation if the reaction occurs.

Q. Question 20.3

Write the balanced chemical equation for the following reaction and identify the type of reaction.

Chlorine gas is passed in an aqueous potassium iodide solution to form potassium chloride solution and solid iodine.

Q.

In the formula $CaB{r}_2$​ what does Ca stand for and what is its valency?

1. Calcium +1

2. calcium -1

3. Calcium +2

4. Calcium -2

Q. Question 19.2
Write the balanced chemical equation for the following reaction and identify the type of reaction:

Sodium hydroxide solution is treated with acetic acid to form sodium acetate and water.

Q.

What happens when a piece of aluminium metal is added to dilute hydrochloric acid?
Also, write the balanced chemical equation if the reaction occurs.

Q. A word equation is a way to describe chemical reactions using the of substances involved.

1. atoms
2. names
3. symbols

Q. Translate the given statement into a chemical equation and then balance it.​

Barium chloride reacts with aluminium sulphate to give ​aluminium chloride and a precipitate of barium sulphate

Q. Write the chemical equation of the reaction which takes place when iron reacts with dilute sulphuric acid. What happens when the gas produced is ignited with a burning matchstick?

Q.

On what basis is the balancing of chemical equations done?

Q.

By using iron metal only, how will you prepare Iron (II) Sulphate from Sulphuric acid?

Q. Metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.