Advertisements
Advertisements
Question
A solution made in water is known as an ______ solution and indicated by the symbol ______.
Advertisements
Solution
A solution made in water is known as an aqueous solution and indicated by the symbol (aq).
Explanation:
The term aqueous comes from the Latin word aqua, meaning water, which acts as the solvent that dissolves the substance. In chemical equations, the symbol (aq) is placed directly after a chemical formula to specify its state. For example, writing NaCl(aq) shows that common table salt is completely dissolved in water rather than being a solid.
APPEARS IN
RELATED QUESTIONS
How will you indicate the following effect in a chemical equation?
Endothermic reaction
Giving examples, state the difference between balanced and unbalanced chemical equations.
Rewrite the following information in the form of a balanced chemical equation:
Magnesium burns in carbon dioxide to form magnesium oxide and carbon.
What is meant by chemical reaction? Explain with the help of an example.
A colourless lead salt, when heated, produces a yellow residue and brown fumes.
(a) Name the lead salt.
(b) Name the brown fumes.
(c) Write a chemical equation of the reaction involved.
Balance the following chemical equation :
Na20 + H20 → NaOH
Balance the following equation Also name the product formed.
`"K" + "CI"_2 → "KCI"`
Balance the following equation:
Pb3O4 + HCl → PbCl2 + H2O + Cl2
Balance the following equation:
HNO3 + H2S → NO2 + H2O + S
Name the fundamental law that is involved in every equation.
Write the balanced chemical equation of the following reaction.
silver nitrate → silver + nitrogen dioxide + oxygen
Write the balanced chemical equation of the following reaction.
Potassium permanganate + hydrochloric acid → potassium chloride + manganese chloride + chlorine + water
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the volume of chlorine gas formed at S.T.P.
Write word equation for the following molecular equation:
CuCo3 → CuO + CO2 [g]
Word equation:
State the characteristics or indications occurring in the above reaction.
Representation of the results of a chemical change – is a chemical equation.
For the equation: FeCl3 + 3NH4OH 3NH4Cl + Fe(OH)3 ↓
Answer the following:
Write the word equation for the above molecular equation.
Write word equation for the following chemical reaction given below. Also state the observation seen in the case.
\[\ce{Na2SO3 + 2HCl ->[\triangle] 2NaCl + H2O + SO2}\]
Balance the following simple equation:
\[\ce{Ca(OH)2 + HNO3 -> Ca(NO3)2 + H2O}\]
Balance the following simple equation:
Mg + CO2 → MgO + C
Give a balanced equation by partial equation method, [steps are given below].
The reaction of excess ammonia with chlorine – Ammonia as a reducing agent
- Ammonia first reacts with chlorine to give hydrogen chloride and nitrogen.
- Hydrogen chloride then further reacts with excess ammonia to give ammonium chloride.
What is a reactant in a chemical equation?
