All categories

3 years ago

Limiting Reactant

Chemistry

1 answer:

liraira [26]3 years ago

3 0

Answer:

(1) Cl₂ is the limiting reactant.

(2) 8.18 g

Explanation:

2Na(s) + Cl₂(g) → 2NaCl(s)

First we convert the given masses of reactants into moles, using their respective molar masses:

Na ⇒ 12.0 g ÷ 23 g/mol = 0.522 mol Na

Cl₂ ⇒ 5.00 g ÷ 70.9 g/mol = 0.070 mol Cl₂

0.070 moles of Cl₂ would react completely with (2 * 0.070) 0.14 moles of Na. There are more Na moles than that, so Na is the reactant in excess while Cl₂ is the limiting reactant.

Then we calculate how many moles of NaCl are formed, using the limiting reactant:

0.070 mol Cl₂ * $\frac{2molNaCl}{1molCl_2}$ = 0.14 mol NaCl

Finally we convert NaCl moles into grams:

0.14 mol NaCl * 58.44 g/mol = 8.18 g

You might be interested in

The radiator in a car is filled with a solution of 60% antifreeze and 40% water. The manufacturer of the antifreeze suggests tha

lakkis [162]

Answer:

0.6 Liters of coolant should be drained and 0.6 Liter of water should be added.

Explanation:

Volume of the radiator = 3.6 L

Percentage of antifreeze = 60%

Total volume of anti freeze in radiator = 60% of 3.6 L :

$\frac{60}{100}\times 3.6 = 2.16 L$

Percentage of water= 40%

Given,optimal cooling of the engine is obtained with only 50% antifreeze.

So, now we want to reduce the percentage of antifreeze from 60% to 50 %

Volume of coolant removed = x

Volume of water added = x

Volume of anti freeze removed = 60% of(x) = 0.6x

Volume of antifreeze left in radiator =50% of 3.6 L = $\frac{50}{100}\times 3.6=1.8 L$

1.8 Liter is the desired volume of the antifreeze.

Total volume - Removed volume = desired volume

2.16 L - 60% of( x) = 1.8 L

$2.16 L-0.6x=1.8 L$

$x=\frac{2.16 l- 1.8 L}{0.6}=0.6 L$

0.6 Liters of coolant should be drained and 0.6 Liter of water should be added.

4 0

4 years ago

In which location would an ocean ridge most likely be located

Nastasia [14]

An ocean ridge is an underwater mountain system which is the result of tectonic plate movement. Its formation involves two processes: ridge-push and slab pull. The former occurs when the growing bulk of the ridge pushes the rest of the tectonic plate away from the ridge. Oftentimes, they go towards a subduction zone. In this zone, the latter, which is the slab pull comes into effect. This is the weight of the tectonic plate subducted or pulled down below the overying plate tagging along the rest of the plate behind it.

They are generally located halfway between two continents.

7 0

3 years ago

All of the following are conductors of electricity except

butalik [34]

What are the choices?

7 0

4 years ago

What is the number of millimoles of H+ in 1.653 mmol of oxalic acid dehydrate?Remember that oxalic acid is diprotic.

Anastaziya [24]

Answer: 3.306 mmol

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

$Molarity=\frac{n\times 1000}{V_s}$

where,

Molarity

n= moles of solute

$V_s$ = volume of solution in ml

$C_2O_4H_2.2H_2O\rightarrow C_2O_4^{2-}+2H^++2H_2O$

According to stoichiometry:

1 mole of $C_2O_4H_2$ gives 2 moles of $H^+$

1.653 mmol of $C_2O_4H_2$ gives = $\frac{2}{1}\times 1.653=3.306mmo$ of $H^+$

Thus number of millimoles of $H^+$ are 3.306

4 0

3 years ago

Both covalent-network solids and ionic solids can have melting points well in excess of room temperature, and both can be poor c

Reil [10]

Answer:

1. Ionic solids dissolve in water.

2. Ionic solid is a better conductor compared to covalent solid.

Explanation:

1. Ionic solids dissolves in water because the water molecules hydrate the ions.When ionic compounds dissolve in water, they break apart into the ions that make them up through a process called dissociation.

Whereas covalent solids don't dissolve in water, instead making a separate layer on the water's surface.

For example table salt that is NaCl is an ionic solid.When we add the salt in water it completely dissolves in water and disappears on the other hand oil is a covalent solid, when we add it in water it does not dissolve and forms a layer on water surface.

2.Ionic solids conducts electricity when it dissolves in water. Because in aqueous form there are ions which conducts electricity.

But covalent solids does not conduct in any form neither in pure form nor in aqueous form because they are bond with shared electrons having no ions which conducts electricity.

3 0

3 years ago