The balanced equation for the redox reaction, which takes place in a basic solution is:
- 2 Cr(OH)₃ + ClO₃⁻ (aq) + 4 OH⁻ → 2 CrO₄²⁻ (aq) + Cl⁻ (aq) + 5 H₂O; <u>option C</u>
<h3>What is the balanced equation for the redox reaction?</h3>
A balanced equation for a redox reaction is one in which the electrons transferred are balanced and the atoms involved in the reaction are also balanced.
To balance redox reactions in a basic solution, OH⁻ ions and H₂O are placed on appropriate sides of the reaction.
Considering the given reaction:
Cr(OH)₃ + ClO₃⁻ (aq) → CrO₄²⁻ (aq) + Cl⁻ (aq):
The balanced equation will be:
2 Cr(OH)₃ + ClO₃⁻ (aq) + 4 OH⁻ → 2 CrO₄²⁻ (aq) + Cl⁻ (aq) + 5 H₂O
The electrons transferred and the atoms involved are balanced.
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Answer:
Mass = 0.32 g
Explanation:
Given data:
Mass of CH₄ = ?
Volume of CH₄ = 500 mL (500 mL× 1L/1000 mL= 0.5 L)
Temperature = 273 K
Pressure = 1 atm
Solution:
Volume of CH₄:
500 mL (500 mL× 1L/1000 mL= 0.5 L)
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
By putting values,
1 atm× 0.5 L = n×0.0821 atm.L/ mol.K × 273 K
0.5 atm.L = n×22.4 atm.L/ mol
n = 0.5 atm.L / 22.4 atm.L/ mol
n = 0.02 mol
Mass in gram:
Mass = number of moles × molar mass
Mass = 0.02 mol × 16 g/mol
Mass = 0.32 g
Answer:
x²+6x+5=0
On comparing with the equation
ax² + bx + c = 0
a=1, b = 6 and c = 5
Now
b²– 4ac = 6² – 4 x 1 x 5 = 36 - 20 = 16

Answer: A 13.88 mL of the concentrated acid would be required to make 250. mL of a 1.00 M
solution.
Explanation:
Given:
= 18.0 M,
= ?
= 1.00 M,
= 250 mL
Formula used to calculate the volume of concentrated acid is as follows.

Substitute the values into above formula as follows.

Thus, we can conclude that 13.88 mL of the concentrated acid would be required to make 250. mL of a 1.00 M
solution.