A certain toilet cleaner uses NaHSO4 as its active ingredient. In an analysis, 0.500 g of the cleaner was dissolved in 30.0 mL of distilled water and required 57.4 mL of 0.00535 M NaOH for complete neutralization in a titration. The net ionic equation is HSO4- + OH- %u2192 H2O + SO42-
What is the percentage by weight of NaHSO4 in the cleaner?