What are the coefficients for the reaction _Cl2O5 + _H2O → _HClO3 once it is balanced?
2 answers:
Answer: The correct option is B.
Explanation: We are given an unbalanced chemical equation, so to find out the actual coefficients for the reaction, we need to balance it.
Balancing a chemical equation, we get
The coefficients for the reaction as seen from above equation are 1, 1, 2.
The correct option is B.
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Answer:
0.12 M
Explanation:
Step 1: Write the balanced equation
NaOH + HCl ⇒ NaCl + H₂O
Step 2: Calculate the reacting moles of NaOH
10 mL of a 0.30 M NaOH solution react.
Step 3: Calculate the reacting moles of HCl
The molar ratio of NaOH to HCl is 1:1. The reacting moles of HCl are 1/1 × 3.0 × 10⁻³ mol = 3.0 × 10⁻³ mol.
Step 4: Calculate the concentration of HCl
3.0 × 10⁻³ mol of HCl are in 25 mL of solution.