Ka of HX is 10-5, then find concentration of H3O+ when equal volumes of 0.25 M HX and 0.05 M NaOH are mixed

Question

Ka of HX is 10-5, then find concentration of H3O+ when equal volumes of 0.25 M HX and 0.05 M NaOH are mixed (A) 4 × 10-5 M (B) 6 × 10-5 M (C) 8 × 10-3 M (D) 2 × 10-5 M

Tardigrade Admin · Accepted Answer

Correct answer is (a) 4 × 10-5 M

Q. $K_{a}$ of $H X$ is $1 0^{- 5}$ , then find concentration of $H_{3} O^{+}$ when equal volumes of $0.25 M H X$ and $0.05 M N a O H$ are mixed

$4 \times 1 0^{- 5} M$

$6 \times 1 0^{- 5} M$

$8 \times 1 0^{- 3} M$

$2 \times 1 0^{- 5} M$

Correct answer is (a) $4 \times 1 0^{- 5} M$

Q. Ka​ of HX is 10−5, then find concentration of H3​O+ when equal volumes of 0.25MHX and 0.05MNaOH are mixed

4×10−5M

6×10−5M

8×10−3M

2×10−5M

Correct answer is (a) 4×10−5M

Q. $K_{a}$ of $H X$ is $1 0^{- 5}$ , then find concentration of $H_{3} O^{+}$ when equal volumes of $0.25 M H X$ and $0.05 M N a O H$ are mixed

$4 \times 1 0^{- 5} M$

$6 \times 1 0^{- 5} M$

$8 \times 1 0^{- 3} M$

$2 \times 1 0^{- 5} M$

Correct answer is (a) $4 \times 1 0^{- 5} M$